33 results about "Micro analysis" patented technology

The invention discloses a microcosmic multi-modal characteristic analysis and visualization method for a cement-based cementing material. The method comprises the following steps: S1, obtaining a back scattering image, a qualitative element surface spectrum and a quantitative element surface spectrum of a cement-based cementing material sample; s2, extracting a pore structure of the back scattering image, and generating a pore distribution diagram; s3, forming a superpixel-level element feature matrix; s4, constructing an Andata data object, and performing dimension reduction clustering to integrate multi-source heterogeneous data; and S5, based on the constructed Andata data object, realizing visual analysis of multiple types of images. The method is high in universality, is not only suitable for ordinary Portland cement systems, but also can be widely applied to multi-phase identification and quantitative analysis of various complex cement-based composite materials, and provides a powerful micro-analysis tool for researching the relationship between material composition, structure and performance.

The invention discloses an early fatigue damage detection method for a rare earth-containing steel rail. The method comprises the following steps: 1) ultrasonic multi-angle probe positioning; 2) preparing and breaking a sample; 3) performing scanning electron microscope and energy spectrum analysis; 4) observing a metallographic structure: analyzing a microstructure around the fracture by adopting a metallographic microscope; and 5) microhardness testing: carrying out high-density hardness testing on a crack source and an adjacent region, and analyzing the correlation between the rare earth induced hardness distribution abnormity and fatigue crack initiation. The invention aims to provide the early fatigue damage detection and identification method for the rare earth element-containing steel rail material, a multi-step microscopic analysis means is adopted to identify a nuclear damage source, and a correlation mechanism between rare earth inclusions and fatigue crack formation is disclosed.

The invention provides an emission reduction potential mining method and system based on energy and carbon online monitoring data of an industrial enterprise, and belongs to the technical field of carbon emission management.The method comprises the steps that energy consumption data of the industrial enterprise is obtained, and abnormal value detection, abnormal value processing and missing value filling are carried out; in response to the processed data, adjusting threshold boundaries of all grade intervals based on similarity constraints set by an iterative algorithm, determining an optimal clustering number, performing energy consumption grade division and clustering processing, and outputting macroscopic analysis data; mining an energy consumption increasing time node in response to the processed data, extracting a micro energy consumption trend, and outputting micro analysis data; and based on the macroscopic analysis data and the microscopic analysis data, outputting a region-level energy consumption analysis structure comparison result and a unit-level energy consumption data mining result. According to the method, macroscopic and microscopic combination is realized, energy consumption data is automatically analyzed, and decision-making is assisted.

The present invention relates to a method for measuring the depth of microscale pitting pits on the surface of aluminum alloy, belonging to the technical fields of failure analysis and microscopic analysis. First, a wedge-shaped block with a specific shape is prepared, and its shape is measured as the basis for size calibration. Secondly, the aluminum alloy specimen is cut perpendicular to the specimen surface, and the cut surface and the wedge-shaped block are simultaneously inlaid into a metallographic specimen. Subsequently, the specimen is ground, polished and thinned layer by layer, and the size of the wedge-shaped block, as well as the width and depth of the pitting pit, are recorded after each thinning. Since the size of the wedge-shaped block changes linearly with the thinning size, the thinning size can be calibrated by using the change in the size of the wedge-shaped block. Finally, through the metallographic measurement data, the least squares method is used to fit the pitting pit contour, and the depth of the pitting pit is calculated. The present invention realizes obtaining the depth of microscale pitting pits on the surface of aluminum alloy, and at the same time evaluates the metallographic structure of the material near the pitting pit, thereby facilitating the prediction of the service life of aluminum alloy components and ensuring their reliability.

The invention relates to the technical field of geological radar images, in particular to a geological radar image interpretation method, which comprises the following steps of: performing macroscopic analysis on a test result image of an SIR-4000 type geological radar, confirming local anomalies in a dark-color gathering area and a dark-white alternation area, and after circling and communicating, combining an engineering geological survey conclusion and geological target body characteristics to obtain a geological target body interpretation result; classifying and judging abnormities such as a real structural surface and a rock vein; and drawing reverse fine anomalies through microscopic analysis, and mapping the reverse fine anomalies to a three-dimensional diagram contrast feature to eliminate instrument system errors. According to the method, real anomalies and false anomalies can be accurately distinguished, the anomaly attributes and the influence range are clarified, the interpretation pertinence and the construction guidance value are improved, and the tunnel construction safety is guaranteed.

The invention discloses a STEM-EDS quantitative analysis method for micro-trace elements on a high-temperature alloy interface, and belongs to the technical field of material micro-analysis. The method comprises the following steps: preparing a transmission electron microscope sample of which the thickness of a thin region is less than 100nm; adopting a field emission or spherical aberration correction transmission electron microscope to carry out STEM imaging under 200-300kV; the method comprises the following steps: firstly, counting different feature morphology interfaces and a quantity ratio thereof under 2000 *-3000 *, then respectively selecting a representative interface from each type of interfaces under 200k *-300k * to carry out EDS surface scanning for 20-30 minutes, and starting drift correction during the period; dividing the interface into a weak segregation interface and a strong segregation interface according to an EDS result; dividing data into quadrats, and counting to obtain an average value of element mass percentage contents of the two types of interfaces, 95% confidence level of the average value and a quantity ratio of the average value; and calculating the final content of the target element. According to the method, the problem that the nanoscale spatial resolution and quantitative statistical representativeness cannot be considered in the prior art is solved, and the accuracy and repeatability of an analysis result are remarkably improved.

The invention discloses a foundation pit supporting structure surface defect detection system and method based on a hierarchical graph model, and the method comprises the steps: firstly carrying out the construction and data collection of a detection system, then extracting a supporting structure surface region from an obtained original data image through a semantic segmentation model, and removing a non-target background; detecting a defect mask in the surface area of the supporting structure after the non-target background is removed by using an improved YOLOv11-seg instance segmentation model, and generating an independent mask; secondly, geometric index calculation of the area, the length and the width is carried out on each obtained defect mask, a pixel unit is converted into an actual physical unit in combination with a homography transformation matrix H, and it is ensured that a detection result can be directly used for structural safety evaluation; and then evaluation and VLM expert judgment are carried out, and finally a diagnosis report is generated and a result is visualized. According to the automatic crack analysis system, macroscopic evaluation and microscopic analysis can be integrated, computing resources can be intelligently managed, and environmental noise can be effectively resisted.

The application discloses a device for micro in-situ characterization of hydrate crystal characteristics of a solid-liquid interface, which comprises a visual reaction kettle, a test sample, a simulated disturbance system, a confocal Raman spectrometer and a constant-temperature control system. The test sample comprises solid wafers arranged oppositely and liquid bridges between the solid wafers. The test sample is placed into the visual reaction kettle, and the temperature and pressure in the visual reaction kettle are adjusted to a low-temperature and high-pressure state. According to different test requirements, a three-axis moving force arm of the simulated disturbance system can drive the solid wafers to move in different directions, so that different degrees of disturbance can be simulated. Meanwhile, the disturbance of fluid injection / extraction, a magnetic field, an electric field and pH value change can also be simulated. In the state of disturbance, micro-analysis information of hydrate structure, components, pore occupancy, hydration number and the like in a natural gas hydrate generation / dissolution dynamic process on the solid-liquid interface can be obtained, so as to provide a theoretical basis for natural gas hydrate accumulation and exploitation.

The device for microcosmic in-situ characterization of the characteristics of the solid-liquid interface hydrate crystal comprises a visual reaction kettle, a test sample, a simulation disturbance system, a confocal Raman spectrometer and a constant-temperature control system, and the test sample comprises oppositely arranged solid wafers and a liquid bridge between the solid wafers; a test sample is placed in the visual reaction kettle, the temperature and the pressure in the visual reaction kettle are adjusted to a low-temperature and high-pressure state, and the three-axis moving force arm of the simulation disturbance system can drive the solid wafer to move in different directions according to different test requirements, so that disturbance of different degrees can be simulated, and the test accuracy is improved. Meanwhile, disturbance of fluid injection / extraction, a magnetic field, an electric field and pH value changes can be simulated, under the disturbance state, microscopic analysis information such as hydrate structures, components, hole occupancy and the hydration number in the natural gas hydrate generation / decomposition dynamic process on the solid-liquid interface can be obtained, and a theoretical basis is provided for natural gas hydrate reservoir forming and exploitation.

The present invention provides an image segmentation processing method based on deep learning, a system thereof, and an electronic device, which can be used to train a sub-graph fine segmentation model using a sub-graph containing a target object after dividing the image to be processed into sub-graphs, repeat the training until the sub-graph fine segmentation model reaches a preset segmentation index, and then segment the sub-graph containing the target object to obtain a sub-graph mask corresponding to the sub-graph. Finally, the sub-graph mask is spliced ​​based on the sub-graph coordinates to obtain the segmentation result of the image to be processed. The above-mentioned image segmentation processing method based on deep learning can realize transfer learning, reduce network training time, and improve segmentation accuracy in the process of iterative field of view focusing through a sub-graph cutting method and a macro to micro analysis method. The present invention can be widely applied to image segmentation processing with multiple target objects having multiple scales and / or high original image resolution but a small proportion of target objects, and is particularly suitable for medical image segmentation tasks.

The present application relates to a kind of low content component energy spectrum analysis method, belong to metallurgical dust resource utilization and material microanalysis technical field.The method includes: preparation sample exposure center section, obtain full section image by scanning electron microscope image splicing, and different analysis regions are divided;Low multiple energy spectrum area scanning is carried out in each analysis region, and the element distribution and zinc content data of multiple positions are obtained;For each analysis region, the arithmetic mean of residual zinc content is calculated as the regional representative value;Based on the characteristic data image of zinc element distribution, high multiple energy spectrum area scanning and point scanning are carried out on the characteristic micro area of zinc element aggregation to analyze the phase form and element composition of residual zinc.The present application realizes the quantitative, zoned, spatial positioning and multi-scale characterization of residual zinc content distribution and occurrence state in metallized pellet by "overall observation-zoned statistics-micro area analysis" progressive analysis, provides more accurate data support for process optimization.

The invention relates to the crossing field of computer vision and material micro-analysis, in particular to an intelligent identification method for a fiber master batch agglomerated structure based on multi-domain feature fusion, which comprises the following steps of: constructing and training a multi-feature fusion network model, and inputting a to-be-detected microstructure image into the trained multi-feature fusion network model; outputting a microstructure image with a rectangular bounding box, wherein a rectangular bounding box region corresponds to an agglomeration structure region of the fiber master batch; compared with traditional manual analysis, the method can effectively improve the analysis efficiency and accuracy, and has wide application prospects in the fields of material science, manufacturing industry and scientific research.

The invention discloses an early fatigue damage detection and identification method based on rare earth steel rail microstructure difference. A high-sensitivity ultrasonic probe is used for carrying out three-dimensional positioning on a suspected fatigue damage area of a steel rail; the suspected area is cut and sampled, a 3mm groove is formed in the rail bottom, then a press machine is used for breaking, and a crack source area is fully exposed; performing high-magnification scanning observation on the fracture of the sample, analyzing the types of inclusions, and distinguishing the existence characteristics of rare earth oxides, sulfides or composite inclusions; a metallographic microscope is adopted to analyze the microstructure around the fracture, abnormal structures such as grain distortion, a precipitated phase and a deformation zone are evaluated, a multi-step microscopic analysis means is adopted to identify a nuclear injury source, and a correlation mechanism between rare earth inclusions and fatigue crack formation is disclosed.

The invention provides a glass insulator detection system based on image analysis detection, and relates to the technical field of image data processing, the system comprises an image acquisition unit, a preprocessing unit, a feature extraction unit, a feature fusion unit and an output unit; according to the invention, after an image acquisition unit is used for acquiring a glass insulator surface image, an image pyramid is constructed from the macroscopic aspect to carry out multi-scale analysis so as to master overall characteristics and multi-resolution information, then, a Canny operator is used for extracting microdefect characteristics of a high-scale sub-image from the microscopic aspect, accurate identification and classification are carried out, and the macroscopic analysis and the microscopic analysis are combined, so that the detection accuracy is improved. By means of the method, defect omission or misjudgment caused by single-scale analysis can be avoided, information of different levels is effectively integrated, rich and accurate data are provided for quality evaluation, the accuracy and reliability of defect detection are improved, and fine evaluation of the surface quality of the glass insulator is achieved.

The invention belongs to but not limited to the technical field of asphalt-aggregate adhesion performance analysis, and discloses an asphalt oxidation functional group and aggregate adhesion action mechanism analysis method and system based on molecular dynamics, and the method comprises the following steps: constructing a multivariable oxidation functional group asphalt molecular model; constructing a refined silicon dioxide aggregate model; building a layered asphalt-aggregate interface system; carrying out geometric optimization, annealing treatment and dynamic simulation on the basis of Materials Studio software; and microscopic analysis of the adhesion performance is realized through interface energy calculation. The method has the remarkable advantages of being high in stability, high in universality, low in cost and the like, overcomes the defects of existing research on micromechanism analysis, and provides a new technical path for correlation research of asphalt aging and adhesion performance degradation.

The application belongs to the technical field of material detection and analysis, and particularly relates to a cross-section sample preparation method of superfine tungsten alloy wire, which comprises the following steps: fixing the tungsten alloy wire on a substrate made of the same material; then using epoxy resin and glass powder to perform hot embedding on the tungsten alloy wire, obtaining an embedded sample after cooling; then grinding and polishing the embedded sample under a pressure of 50-60 MPa; finally using a corrosion solution prepared from hydrogen peroxide, ammonia water and sodium dodecyl sulfonate to corrode the embedded sample, obtaining a tungsten alloy wire cross-section sample. The application uses a substrate made of the same material to fix the tungsten alloy wire, which is convenient for positioning the cross-section and avoids the occurrence of original cell reaction during corrosion; by accurately controlling key process parameters such as grinding pressure and polishing disc rotating speed, the cross-section micro-crack defects are effectively eliminated; by selecting a suitable type of corrosion agent and a suitable corrosion treatment time, a standardized detection sample meeting the requirements of microscopic analysis such as metallographic microscope and scanning electron microscope is prepared.

The invention provides a water plant station light storage construction project investment intelligent evaluation method and system, and relates to the technical field of industrial plant station energy management and investment evaluation, the system comprises a hardware layer and a function layer, and the components of the hardware layer adopt an industrial standard communication protocol to realize data interaction and instruction transmission; the hardware layer comprises a sensor network, a monitoring center, a comprehensive management platform, an algorithm server, an equipment regulation and control center and a central database; the monitoring center is in communication connection with the sensor network and is used for carrying out denoising and missing value complementation preprocessing on the acquired data; a plurality of typical daily load curves are accurately extracted from a high-dimensional noisy water affair load time sequence, and hidden and dispersed load clustering modes are effectively recognized; the matching relation between each typical daily load and the corresponding illumination characteristic is microscopically analyzed, and the overall characteristic and the change rule of the annual load are macroscopically integrated, so that the photovoltaic capacity configuration and the energy storage unit type selection can be ensured to be deeply adaptive to the actual energy demand of the water plant station.

The invention provides a pantograph life prediction method and system combined with wear time sequence analysis, and relates to the technical field of electric locomotive equipment, and the method comprises the steps: collecting a first morphology time sequence data sequence, a second electrical and thermal time sequence data sequence and a third dynamic time sequence data sequence of a pantograph in an operation process, and forming a multi-dimensional time sequence data sequence; inputting the multi-dimensional time sequence data sequence into a pre-trained life degradation index generation model, and outputting to obtain a life degradation index time sequence curve; morphological feature extraction is carried out on the life degradation index time sequence curve through time windows of macroscopic, mesoscopic and microscopic analysis scales, and fusion is carried out to generate a multi-scale feature vector; based on the multi-scale feature vector, the current wear stage of the pantograph is judged; and inputting the multi-scale feature vector into the residual service life prediction model by taking the current wear stage as a condition parameter, and outputting to obtain a residual service life prediction value of the pantograph. And the prediction precision of the residual service life of the pantograph is improved.

The application discloses a macro-microscopic analysis method and system for displacement development based on a sand filling model, and the analysis method comprises the following steps: assembling a simulated reservoir system based on a visual two-dimensional sand filling model; obtaining a displacement image; identifying macroscopic oil saturation; and establishing a microcosmic residual oil regularity evaluation method. The macro-microscopic oil-water distribution image in the displacement process under the reservoir condition can be determined more objectively and comprehensively to measure the development effect of the reservoir, the influence of different development modes under the oilfield condition on the distribution and type of residual oil is optimized, and the injection fluid parameters are guided.

The invention discloses a method and equipment for high-throughput ultramicro analysis of free nucleosome information in peripheral blood. Compared with a traditional method, the method has the advantages that multiple histone modification types of multiple plasma samples can be synchronously detected, the detection efficiency is effectively improved, the detection cost is reduced, the requirement of ultramicro samples is met, and huge clinical application prospects are shown.

The present invention provides a macro- and micro-analysis method for solid propellant failure processes, comprising the following steps: 1) hierarchically dividing a particle-filled composite material from a macroscopic model to a microscopic model, and then superimposing the constitutive response from the microscopic model onto the macroscopic model, thereby achieving cross-scale constitutive modeling of the particle-filled composite material from the microscopic to the macroscopic scale; and 2) mapping the mesoscopic model structure to constitutive parameters, and from sub-model constitutive parameters to intermediate sub-model constitutive parameters, using an artificial neural network model. This method is well-conceived and can describe the influence of the local microstructure of the particle-filled composite material on its macroscopic mechanical properties, achieving a unified macroscopic and microscopic analysis, significantly improving the efficiency of macro- and micro-analysis of solid propellant failure processes.

The invention discloses a water quality management and control system and method based on circulating water of a wet cooling unit, and relates to the technical field of water quality management and control, and the system comprises a high-precision online monitoring device, laboratory detection equipment, an electrochemical analysis unit, a simulation experiment platform, a microscopic analysis instrument, computational fluid dynamics software and a mathematical model establishment module; the high-precision online monitoring device is used for regularly monitoring the pH value, dissolved oxygen and ion concentration of circulating water in real time; and the laboratory detection equipment is connected to the high-precision online monitoring device and is used for providing supplementary data. A comprehensive and efficient wet cooling unit circulating water quality management and control system is constructed, and the safety and economic benefits of power production are remarkably improved.

The invention belongs to the technical field of material detection and analysis, and particularly relates to a superfine tungsten alloy wire section sample preparation method which comprises the following steps: fixing a tungsten alloy wire on a substrate made of the same material; then carrying out hot inlaying by using epoxy resin and glass powder, and cooling to obtain an inlaying sample; then, the mounting sample is ground and polished under the pressure intensity of 50-60 MPa; and finally, corroding the tungsten alloy wire by using a corrosive liquid prepared from hydrogen peroxide, ammonia water and sodium dodecyl sulfate to obtain a tungsten alloy wire section sample. According to the invention, the tungsten alloy wire is fixed by adopting a homogeneous matrix material, so that the cross section is conveniently positioned, and primary battery reaction during corrosion is also avoided; by accurately regulating and controlling key process parameters such as grinding pressure and the rotating speed of a polishing disc, the section micro-crack defect is effectively eliminated; a standard detection sample meeting microscopic analysis requirements of a metallographic microscope, a scanning electron microscope and the like is prepared by selecting proper corrosive agent types and corrosion treatment duration.

The invention provides a rare earth microalloyed steel bar performance evaluation method, and relates to the technical field of metal material performance evaluation.The method includes the steps that a steel bar longitudinal section metallographic specimen is prepared, inclusion macroscopic rating is conducted under a microscope, an inclusion automatic analysis system is adopted for microanalysis, and the rare earth adding amount range is controlled to be 0.015-0.030 wt%; according to collaborative evaluation on the low-temperature impact toughness of the rare earth reinforcing steel bar, the impact energy is required to be greater than or equal to 200J under the condition of-20 DEG C, meanwhile, the rare earth reinforcing steel bar structure is evaluated, the ferrite volume fraction is required to be greater than or equal to 60%, and a high-toughness rare earth reinforcing steel bar product needs to meet the requirements of inclusion rating, impact energy and ferrite content; harmful inclusions are converted into spherical rare earth compounds through rare earth modification, the low-temperature toughness is remarkably improved, the comprehensive performance is superior to the national standard by 30% or above, standardized production and wide application of high-toughness rare earth steel bar products are promoted, and safety and reliability of constructional engineering are improved.

The invention discloses a preparation method of a copper plate EBSD sample, and belongs to the technical field of material microscopic analysis and testing. The method mainly comprises the following steps of sample cutting and fixing, gradient abrasive paper grinding, polishing treatment, cleaning and drying, constant-current electrolysis and post-treatment. According to the method, the mechanical damage layer on the surface layer of the sample can be effectively removed, and the strain-free, scratch-free, clean and flat sample surface is obtained, so that the high-quality EBSD Kikuchi pattern is obtained, and the method is suitable for the fields of metal material interface research, tissue analysis, grain boundary characterization and the like.

The application discloses a kind of high-temperature alloy interface micro trace element STEM-EDS quantitative analysis method, belong to material microscopic analysis technical field.The method includes: the preparation thin area thickness less than 100nm transmission electron microscope sample;STEM imaging is carried out under 200-300kV using field emission or spherical aberration correction transmission electron microscope;First, under 2000x-3000x, the quantity proportion of different characteristic interface and its number ratio is counted, then under 200kx-300kx, a representative interface in each interface is selected to carry out 20-30 minutes EDS surface scanning, during enabling drift correction;Interface is divided into weak segregation interface and strong segregation interface according to EDS result;Data is divided into sample square, the average value of the element mass percentage of two types of interfaces and its 95% confidence level and number ratio are obtained by statistics;The final content of target element is calculated.The application solves the problem that existing technology cannot consider nanoscale spatial resolution and quantitative statistical representation, significantly improves the accuracy and repeatability of analysis result.

The invention relates to the technical field of welding quality monitoring, in particular to a surface acoustic wave filter chip welding quality online monitoring control system. A comprehensive abnormal index is calculated through a prediction analysis mechanism of the welding prediction analysis unit, parameter optimization execution information is generated, the dynamic parameter execution module generates welding optimization parameters to adjust the welding execution unit, a large number of defective products caused by passive response are avoided, welding defects are early warned in advance and actively adjusted, and the welding quality is improved. The welding yield is improved; resonance data and deformation data are comprehensively analyzed through a microanalysis mechanism of the welding microcosmic monitoring unit, and a microcosmic evaluation state is output; and meanwhile, the data storage and visualization module realizes full-process data storage and real-time visualization display, so that the problem that microscopic deformation monitoring is not carried out is avoided, an operator can conveniently master the state in real time, and data support is provided for subsequent process optimization.

The invention relates to the technical field of component detection, and discloses a quantitative detection method for hypoglycemic active components in mulberry leaves, and the method comprises the following steps: carrying out baseline correction on original near infrared spectrum data of a mulberry leaf sample to be detected to obtain standard near infrared spectrum data; carrying out surface micro-analysis on the standard near infrared spectrum data to obtain enhanced spectrum characteristics; correlation wave band optimization is carried out on the standard near infrared spectrum data to obtain a target spectrum wave band; performing correlation calibration analysis on the enhanced spectral characteristics and the target spectral band to obtain blood glucose reducing active ingredient correlation data; carrying out content inversion evaluation on the standard near infrared spectrum data to obtain a predicted content value; performing structured integration on the predicted content value and related data of the hypoglycemic active components to obtain a quantitative detection report of the hypoglycemic active components; the method can improve the quantitative detection efficiency of the hypoglycemic active components in the mulberry leaves.

The invention specifically relates to a method for testing and evaluating the aging performance of a metal oxide resistor disc, and relates to the technical field of performance evaluation of metal oxide resistor discs, and the method comprises the following steps: respectively obtaining a macro-loss value and a micro-loss value after macroscopic and microscopic analysis of a sample, carrying out normalization processing on the macro-loss value and the micro-loss value, and calculating the aging performance of the metal oxide resistor disc; a failure mechanism coefficient is obtained after weighted summation calculation, and a corresponding quality grade is matched based on the failure mechanism coefficient. The method comprises the following steps: constructing a digital twin baseline fusing electricity, a microstructure and thermal characteristics; electrical parameters such as a volt-ampere characteristic curve and a nonlinear coefficient are accurately obtained through standardized testing, microscopic data such as grain morphology and element distribution and thermal characteristic data such as steady-state temperature rise and temperature uniformity are analyzed, and a multi-dimensional reference system is formed; and an accurate reference is provided for aging comparison, and evaluation is ensured to be changed from single-parameter judgment to multi-dimensional comprehensive analysis.

The invention discloses a failure analysis method and system and a defect marking structure, and belongs to the technical field of semiconductors. Cross-scale and cross-equipment seamless precise positioning is realized, and the transition problem from macroscopic positioning to microscopic analysis is perfectly solved through a multi-stage marking system combining'micron-scale defect marking 'and'macroscopic pointing marking' with the assistance of'digital distance marking '; wherein the pointing mark ensures that a general area is quickly found, and the distance mark provides accurate navigation, so that the time for searching defects under high-magnification equipment is greatly shortened, the analysis efficiency is improved by more than multiple times, and the defect loss is effectively avoided.