95results about How to "Improve the correction effect" patented technology

The invention relates to an image correction technology, and discloses a CBCT (cone beam computed tomography) image osteosclerosis artifact correction method, which comprises the following steps: acquiring a high-energy projection image and a low-energy projection image of a target object, performing image reconstruction, and calculating to obtain a primary artifact-free image; extracting a bone image and a soft tissue image from the primary artifact-free image based on threshold segmentation, calculating a bone weight, taking the artifact image of the target object as training input data, taking the bone image and the soft tissue image as reference data, and training to obtain a dual-channel artifact correction model; and outputting a preprocessed bone image and a preprocessed soft tissue image according to the to-be-processed osteosclerosis artifact image by using a dual-channel artifact correction model, and carrying out weighted fusion on the preprocessed bone image and the preprocessed soft tissue image according to a bone weight to obtain an artifact-free reconstructed image. The invention further provides a CBCT image osteosclerosis artifact correction device, electronic equipment and a storage medium. According to the invention, the image artifact correction effect can be improved.

The invention discloses a special vehicle framework intelligent shape righting system and method based on dynamic measurement control, and the system comprises a movable support, a ground scanning module disposed on a front side supporting leg of the movable support, and a welding line recognition module disposed at the center of the front side of the top of the movable support. And the deformation correction mechanism is arranged at the top of the movable bracket and can move left and right. According to the invention, different distance values of different positions are dynamically obtained by controlling a plurality of groups of distance measurement identification modules, welding seam positions are distinguished and identified, to-be-corrected positions are determined, and the height of the supporting legs is controlled to rise and fall in combination with the ground variation amplitude, so that automatic and intelligent identification control and judgment can be carried out on the special vehicle framework at any place; therefore, intelligent shape righting control of the whole special vehicle framework is realized.

The invention provides a nuclear fuel assembly grabbing positioning and deviation correction method and system based on industrial vision. The method comprises the steps of obtaining multi-view image data of a target nuclear fuel assembly and structured light deformation image data under a corresponding view; extracting an outer contour boundary of the target nuclear fuel assembly in a three-dimensional space based on the multi-view image data and the structured light deformation image data to obtain initial outer contour boundary data; performing pose positioning based on the initial outer contour boundary data in combination with original design data of the target nuclear fuel assembly to obtain a current pose parameter of the target nuclear fuel assembly in a three-dimensional space; performing deviation analysis based on the current pose parameter in combination with a preset standard pose parameter to obtain current deviation data and a corresponding deviation analysis result; and if the deviation analysis result is correctable deviation, performing instruction generation based on the current deviation data to obtain a pose correction instruction. The problem that the correction effect is poor in an existing method is solved.

This invention provides a method and system for tracing the source of soil organic matter pollution, relating to the field of data processing technology. The method includes: collecting soil and end-member samples from the site to be tested and simultaneously performing sampling and measurement on the soil and end-member samples to construct a three-dimensional feature vector of the samples and an end-member feature matrix; calculating the end-member discrimination index of the end-member feature matrix using the Euclidean distance algorithm, checking and correcting the end-member feature vectors in the end-member feature matrix to obtain the target end-member feature matrix; calculating a dynamic weight compensation factor based on the target end-member carbon-nitrogen mass ratio in the target end-member feature matrix; establishing an isotope mass balance equation based on the sample three-dimensional feature vector and the target end-member feature matrix, and embedding the dynamic weight compensation factor into the isotope mass balance equation to construct a weighted correction equation set; substituting the weighted correction equation set into a Bayesian linear mixture model to calculate the average contribution rate of each pollution source end-member to the accumulation of soil organic matter, thus completing the pollution source tracing.

The utility model discloses a sectional type scoliosis correction device, including scoliosis correction arc plate, still include pelvic support, with the pelvic support both sides rotation connection's basin bone limiting arc plate, lower extreme with the pelvic support both sides rotation connection's basin bone limiting arc plate rear end fixed link and upper end with scoliosis correction arc plate lateral fixed link and lower extreme with basin bone limiting arc plate detachable connection's two second telescopic piece. The utility model has the advantages of: adopt sectional type structure, has overcome the existing scoliosis correction device wearing in the middle patient's spine and cannot be flexed and cannot be flexibly adjusted problem, makes scoliosis correction device local effective traction, has improved the correction effect and has improved the patient's comfort degree, the application structure simple, convenient operation, strong adaptability and so on, is applicable to different age stages and the scoliosis patient of the degree of illness.

This invention relates to the field of data verification technology, and particularly to a method, apparatus, device, and storage medium for rapid geometric verification of hyperspectral data. The method includes: acquiring a high-resolution visible light area array image and preprocessing it to obtain a visible light orthorectified image; acquiring a raw hyperspectral image and performing coarse geometric correction to obtain a coarsely geometrically corrected hyperspectral orthorectified image; performing feature extraction and matching processing on the two images obtained above, constructing a large number of pseudo-control points based on the matching results to obtain a set of point pairs including geographic coordinates; calculating the true scan vector of each scanned pixel in the coordinates of a digital land model, and calculating the corresponding geographic coordinates; constructing a cost function based on the set of point pairs and the calculated geographic coordinates; and iteratively solving the hyperspectral geometric verification parameters with the goal of minimizing the cost function to perform geometric correction on the raw hyperspectral image. The method disclosed in this application can significantly improve the efficiency of geometric verification and reduce the verification cost.

The utility model belongs to the technical field of correction devices, and particularly relates to a profile steel rolling correction device which comprises a machine table, a lifting rolling bar supporting device arranged above the machine table, a pushing mechanism installed on the top of the machine table, an adjustable correction mechanism installed on the top of the machine table, and an adjusting seat and a supporting frame which are installed on the top of the machine table. A second gear motor is installed on the side face of the adjusting seat, the output end of the second gear motor is connected with the first two-way lead screw, a first adjusting seat and a second adjusting seat are slidably installed on the inner side of the adjusting seat, and the inner sides of the first adjusting seat and the second adjusting seat are provided with correcting grooves and correcting seats, and the side faces of the correcting seats are connected with first supporting inserting blocks; the H-shaped steel straightening machine can be suitable for straightening work of H-shaped steel of different sizes within a certain range, meanwhile, full coverage of the vertical section of the H-shaped steel is achieved, simultaneous straightening of the upper half part and the lower half part of the H-shaped steel can be completed at a time, and the straightening effect and efficiency are greatly improved.

The invention belongs to the technical field of medical instruments, and particularly relates to an invisible anterior tooth adduction correction device based on implant anchorage, which comprises a main body, two sides of the main body are fixedly connected with a pair of anchorage arms, one end, far away from the main body, of each anchorage arm is fixedly connected with a mounting part, and the edge of the main body is fixedly connected with a pair of fixing rings. The fixing ring is located between the pair of anchorage arms, a sliding groove is formed in the edge of the side, away from the fixing ring, of the body, a pair of sliding blocks are slidably connected to the inner side of the sliding groove, first hooks are fixedly connected to the sides, away from the fixing ring, of the sliding blocks, and a pair of second hooks are arranged on the two sides of the sliding groove. The anterior tooth adduction device has the beneficial effects that by arranging the main body, the anchorage arm, the anchorage nail and the fixing ring, the anterior tooth adduction device can be fixedly mounted in the palate skull of the oral cavity of a patient, and anchorage is provided for anterior tooth adduction of the patient, so that loss of anchorage is avoided, and accurate control on the anterior tooth adduction speed, direction and mode of the patient is realized.

The utility model relates to the technical field of paronychia correction, in particular to a paronychia corrector, which is provided with a corrector and a dressing layer, so that in a paronychia correction process, the paronychia corrector can effectively resist bacteria and diminish inflammation for inflammation and pus generation symptoms, drain seepage, absorb the seepage through the dressing layer and correct nails, and the paronychia corrector has the advantages that the paronychia corrector is simple in structure and convenient to use. The wound does not need to be frequently cleaned, the operation is more convenient, and the correction effect is good; the device comprises a corrector, the device further comprises a dressing layer which is installed in the corrector. The corrector is used for correcting fingernails, and the dressing layer is used for antisepsis and anti-inflammation of wounds.

The utility model relates to textile equipment technical field especially, more camera coordination's fabric weft yarn deformation correction equipment. Its technical scheme includes support foot, the top fixedly connected with crosspiece of multiple support foot, the outer wall of two crosspieces is provided with correction mechanism, the correction mechanism includes the multiple fixed knot of fixed in the crosspiece outer wall, the top fixedly connected with top support column of multiple fixed knot, multiple top support column is provided with transmission, the inner wall of crosspiece is provided with heating conduction mechanism, the transmission includes the outer wall one side fixedly connected with drive motor of multiple top support column fixed in the both sides. The utility model discloses more camera coordination's fabric weft yarn deformation correction equipment, it can realize the efficient correction to different types and degree weft yarn deformation to the advantage that avoids the performance decline caused by the uneven heating of fabric.

The application discloses a kind of light field intensity and phase collaborative correction method based on multilayer deformable mirror, belong to adaptive optics technical field.The method is configured in optical path multilayer conjugate deformable mirror, wherein first deformable mirror is conjugated to high layer turbulent layer, uses random parallel gradient descent algorithm based on sub-aperture light spot intensity statistical characteristics, with sub-aperture light spot intensity variance as cost function to control, utilize angular spectrum diffraction transmission mechanism to make high layer phase modulation convert into receiving surface amplitude modulation, realize light intensity homogenization;Second deformable mirror is conjugated to telescope pupil, on the basis of light intensity homogenization, residual phase is closed-loop corrected by wavefront reconstruction algorithm.The application realizes the layered decoupling control of light intensity and phase, effectively suppresses strong flicker effect, expands the working boundary of adaptive optics system under severe atmospheric conditions.

The invention aims to provide a gene sequence information comparison and correction method and device. The method comprises the following steps: inputting data to be subjected to third-generation sequencing; performing rough comparison on the data by using a halving comparison strategy to obtain data after rough comparison; the data obtained after rough comparison are analyzed, and analyzed data are obtained; a comparison database is constructed; performing BLASN fine comparison on the analyzed data and a comparison database to obtain data after fine comparison; setting a sequence query to be compared, and aligning any data after fine comparison with the sequence query to be compared; in the process of performing query alignment on the finely-compared data and the compared sequence, performing voting on the basic group at any position to generate a new basic group, and judging the problem of the current sequence through the new basic group; the method and the device have good correction capability and time efficiency.

Embodiments of this disclosure provide a method, apparatus, and storage medium for electron beam exposure correction. The method includes: determining a first dose distribution for electron beam exposure by performing electron beam proximity effect correction on a target pattern based on a predetermined dose distribution, the first dose distribution indicating a set of dose adjustment values ​​for compensating for scattering effects during electron beam exposure on the target pattern; determining a second dose distribution for electron beam exposure by performing electron beam haze effect correction on the target pattern based on the first dose distribution, the second dose distribution indicating a set of dose adjustment values ​​for compensating for haze effects during electron beam exposure on the target pattern; and determining a target dose distribution for electron beam exposure by performing electron beam proximity effect correction on the target pattern based on the first and second dose distributions.

The utility model relates to the technical field of vision correction, and discloses a vision correction optical instrument. The vision correction optical instrument comprises a first mirror body and a second mirror body, one end of the first mirror body is rotationally connected with a rotating shaft, one side of the rotating shaft is rotationally connected with the second mirror body, one end of the first mirror body is rotationally connected with a first mirror frame, and one end of the second mirror body is rotationally connected with a second mirror frame. An elastic head band is fixedly connected between the first spectacle frame and the second spectacle frame, a soft plate is in close contact with the skin of a wearer, extrusion to the skin of the human body is reduced through the plasticity of the soft plate and close contact with the skin of the wearer, the wearing experience of the wearer is improved, meanwhile, the correction range can be changed by rotating and adjusting the sight glass, and the correction effect is improved. Different correction values are represented by adjusting the scales on the sight glass, and meanwhile, stimulation of strong light to eyes of a wearer is reduced by protecting the lenses, so that the wearing experience of the wearer is improved, and the correction effect is improved.

This invention relates to a method for Nyquist ghosting correction in DWI-EPI images, comprising the following steps: acquiring raw magnetic resonance imaging (MRI) data; segmenting the raw MRI data; extracting reference scan data for reference scan correction; filling the remaining data into corresponding k-space locations to form k-space data in the (Kx,Ky) domain; transforming both the k-space data in the (Kx,Ky) domain and the reference scan data into (x,Ky) mixed-domain data; performing reference scan correction on the (x,Ky) mixed-domain data to obtain first corrected data; transforming the first corrected data in the (x,Ky) mixed-domain into (Kx,Ky) domain data; performing referenceless scan correction on the (Kx,Ky) domain data to obtain second corrected data; performing zero-padding on the second corrected data to obtain third corrected data; and performing a two-dimensional inverse Fourier transform on the third corrected data to obtain an artifact-free image. Compared with existing technologies, this invention has advantages such as good correction effect and short correction time.

The invention provides a nitrite quantitative detection method based on surface enhanced Raman spectroscopy, relates to the technical field of surface enhanced Raman spectroscopy, and constructs a self-correcting SERS substrate through a three-phase liquid-liquid interface co-assembly technology. In the experiment process, a sample to be detected is mixed with a thiobarbituric acid solution, the mixture is adjusted to be acidic, NO2 <-> and thiobarbituric acid are subjected to an S-nitrosation reaction, and S-nitroso mercaptan is generated. And then, immersing the self-correcting SERS substrate into a reaction solution, so that the substrate adsorbs the generated S-nitroso mercaptan, and further, a Raman signal is enhanced. After soaking is completed, the substrate is taken out and dried, finally, a Raman signal is collected through a Raman spectrometer, and the concentration of NO2 <-> is accurately analyzed through the change of the signal intensity. According to the technical scheme, rapid and high-sensitivity detection of NO2 <-> is achieved, good selectivity and anti-interference capacity are achieved, and the method is widely suitable for detection requirements of multiple fields such as environment monitoring and food safety.

The invention is suitable for the technical field of health care instruments, and particularly relates to a back lifting exercise device which is composed of a support, a frame, a power assembly and a controller. The upper end of a vertical rod in the support is connected with a first support in the frame through a first hinge shaft. The end of the first support is hinged to a first electric push rod through a second hinge shaft, and the other end of the first electric push rod is hinged to the upper portion of a vertical rod in the support through a third hinge shaft. A first limiting bolt is arranged on the upper portion of the vertical rod in the support. A controller in the control assembly is located on the upper portion of the frame.

This application provides a method and system for correcting the brightness temperature of a spaceborne one-dimensional integrated aperture microwave radiometer. The method includes: acquiring two-dimensional observed brightness temperature data O along the vertical satellite orbit and along the satellite orbit for different ascent and descent orbits of the microwave radiometer; acquiring external data such as atmospheric profiles, surface data, and sea surface salinity along the radiation transmission path to obtain simulated Earth radiation brightness temperature data B, and removing outlier data; subtracting the observed brightness temperature data from the simulated brightness temperature data to obtain O-B data for multiple single orbits, and removing outlier data; taking the median of the O-B data to obtain the average difference in O-B brightness temperature and the two-dimensional corrected brightness temperature; dividing the average difference in O-B brightness temperature by the observed brightness temperatures in the corresponding two vertical directions to obtain two-dimensional relative brightness temperature correction coefficients based on different ascent and descent orbits; and correcting the observed brightness temperature using the two-dimensional relative brightness temperature correction coefficients or the two-dimensional corrected brightness temperature. The advantage of this application is that the established two-dimensional correction coefficients have a better correction effect.

The application belongs to the technical field of abnormal data detection, and aims to solve the problem of inaccurate irradiance data anomaly detection in the prior art, and provides an irradiance data anomaly detection method and system based on a hybrid neural network, wherein a self-correlation function method is used to determine an optimal time sequence window length; an adaptive dynamic time warping based on a physical law constraint term of introduced cloud layer propagation and a local cost function based on an irradiance change rate is used to determine an optimal time delay parameter between sites and perform time delay alignment; a bidirectional gate recurrent unit is used to extract the time sequence dependence law of the target site itself, a time delay graph convolution network is used to extract the spatial correlation characteristics between the reference site and the target site based on the time delay parameter, considering the time delay characteristics, a spatiotemporal attention mechanism is used for feature deep fusion, an irradiance simulation value of the target site is obtained, and whether the current time data is an abnormal point is determined according to the residual sequence. The application can accurately identify abnormal irradiance data.

This invention provides a strip alignment device for an air cushion furnace based on tension compensation, used for strip alignment. It includes a fixed frame; an alignment frame mounted on the fixed frame; an alignment roller mounted on the alignment frame; a strip position sensor located at one end of the strip output for detecting the strip position and sending a first detection signal; a control console for generating a first control signal based on the first detection signal; and a hydraulic cylinder, one end of which is mounted on the fixed frame and the other end on the alignment frame, driving the alignment frame according to the first control signal. The beneficial effects of this invention are that the anti-breakage roller and the alignment roller work together to synchronously adjust the strip tension distribution during alignment, effectively avoiding strip breakage caused by localized stress concentration; and by combining the strip position with the alignment roller displacement, the control console can identify deviations caused by mechanical clearance or hydraulic drift, generating more precise control signals.

The application discloses a multi-path error fusion correction method and system based on Beidou multi-track difference, which comprises the following steps: collecting Beidou carrier phase observation data of a reference station and a monitoring station, obtaining double-difference residuals through preprocessing and double-difference solving, and converting to obtain single-difference residual sequences; dividing Beidou satellites into three categories of geostationary orbit satellites, inclined geosynchronous orbit satellites and medium earth orbit satellites according to satellite orbit types; combining satellite azimuth and elevation angle information, extracting stable background information from GEO residuals, extracting slow change information from IGSO residuals, and extracting abnormal disturbance information from MEO residuals; constructing a basic hemispherical model based on the stable background information of each satellite itself, and updating the basic background correction value by using the stable background information, the slow change information and the abnormal disturbance information to generate a current epoch multi-path correction value; and applying the correction value to corresponding satellite observation values to complete observation correction and deformation monitoring solving.

The invention relates to the technical field of sheet metal part repairing and correcting, in particular to a sheet metal correcting and repairing device for automobile maintenance, which comprises a repairing table and a correcting mechanism, a hydraulic cylinder is arranged at the middle end of the bottom wall of the repairing table, a sliding rail is transversely arranged at the middle end of the top of the repairing table, and guide rods are arranged on two parallel sides of the sliding rail; sliding tables are distributed on the outer walls of the sliding rails and the guide rods in a sleeving manner, limiting middle plates are arranged in the middles of the sliding tables on the two sides, locking type mounting screw rods are mounted on the two sides of each limiting middle plate, and limiting columns are fixed to the outer walls of the locking type mounting screw rods; a correcting mechanism is mounted on the surface of the middle sliding table; according to the sheet metal part correcting device, the problems that in the prior art, when an existing device corrects a sheet metal part through the lever principle, limiting columns on the two sides of the existing device only can achieve a single-side limiting structure, limiting of the sheet metal part is not stable enough during sheet metal forming, the loosening situation is likely to occur, a single columnar correcting part is adopted, the correcting position is limited, and adaptability is poor are solved.

This invention discloses a method for correcting the hydrogen isotope ratio of water samples obtained through adsorption, addressing the problems of high cost of existing high-purity chemical water adsorbents and the tendency for deviations in hydrogen isotope ratio test results caused by physical and industrial chemical water adsorbents. The method involves: obtaining known parameters of a water sample and measuring the hydrogen isotope ratio of the water sample after adsorption; constructing a correction formula and extracting the abscissa parameter formula, then substituting the known parameters into the abscissa parameter formula as the abscissa parameter, plotting the hydrogen isotope ratio of each group of water samples as the ordinate parameter, and performing linear fitting to obtain a fitted straight line. The correction formula is then updated by combining the slope and intercept of the fitted straight line. Finally, the test parameters of the water sample to be tested are obtained, and its hydrogen isotope ratio is measured after adsorption. This value is then substituted into the updated correction formula to obtain the corrected hydrogen isotope ratio of the water sample to be tested. This method is simple to operate, has good correction effect, can significantly reduce material costs, and has a wide range of applications.

This disclosure relates to a method, apparatus, device, and storage medium for processing a bracket model. The method includes: acquiring a bracket model and a first coordinate system corresponding to the bracket model, wherein the first origin coincides with the center of the groove base plate of the bracket model, the first X-axis is parallel to the short side of the groove base plate, and the first Y-axis is perpendicular to the first X-axis; acquiring a tooth model and the tooth's long axis and mesiodistal axis; placing the bracket model on one side of the tooth model with the first origin located on the frame axis, the first X-axis and the mesiodistal axis in the same plane, and the first Y-axis and the tooth's long axis in the same plane, wherein the frame axis passes through the bracket placement point of the tooth model and is perpendicular to both the tooth's long axis and the mesiodistal axis; and moving the bracket model along the frame axis to the bracket placement point of the tooth model until the bracket model and the tooth model contact each other. According to this disclosure, the bracket model can be conveniently and efficiently placed onto the tooth model.

The present invention aims to provide a method and apparatus for gene sequence information comparison and correction, comprising: inputting data to be sequenced for third-generation sequencing; performing a coarse comparison on the data using a half-and-half comparison strategy to obtain coarsely compared data; parsing the coarsely compared data to obtain parsed data; constructing a comparison database; and comparing the parsed data with the comparison database. BLASN Detailed alignment yields the aligned data; the sequence to be compared is set. query And compare any of the finely aligned data with the compared sequence. query Alignment; the data after fine alignment with the sequence being compared. query query During the alignment process, a new base is generated by voting on the bases at any position, and the problem of the current sequence is determined by the new base; this disclosure has good correction capability and time efficiency.

The present invention discloses a drill rod correction clamping device for geotechnical engineering, which relates to the technical field of geotechnical engineering equipment, including a machine platform, a drill rod placed in the middle of the machine platform, a first correction mechanism for correcting the drill rod shaft part is arranged in the middle of the machine platform, the first correction mechanism includes two outer clamps symmetrically distributed in the middle of the machine platform, an electric push rod is installed on both sides of the machine platform, the output end of the electric push rod horizontally passes through the machine platform and is connected to the side of the outer clamp, and an inner clamp is distributed inside each of the outer clamps; a sensing mechanism for providing power is arranged inside the first correction mechanism; a second correction mechanism for correcting the drill bit part of the drill rod is arranged at the bottom of the first correction mechanism. The drill rod correction clamping device for geotechnical engineering disclosed by the present invention can correct the drill rod shaft and the drill bit synchronously, and has the effect of high work efficiency.

The present invention discloses a method for fast correction of fisheye images based on distortion stretching factors, extracting effective areas of fisheye images; establishing a fisheye image correction model based on distortion stretching factors on the basis of a longitude correction model; determining the value of the distortion stretching factor in the model, establishing a mapping relationship between pixel coordinates in a blank correction image and sub-pixel coordinates of effective areas of the fisheye image, completing coordinate mapping and performing grayscale interpolation, and obtaining a corresponding correction image of the fisheye image. The present invention performs fisheye image correction in both horizontal and vertical directions on the basis of considering the influence of radial distortion, and has the characteristics of simple algorithm, strong real-time performance, easy transplantation of embedded devices and mobile devices, and good correction effect.

The invention discloses magnet detection equipment and a detection method, the magnet detection equipment comprises a processing device, a control cabinet, a platform, a measuring device, a base, a fixed support, a rotating mechanism and a placing jig, and an adjustable structure is arranged between the measuring device and the fixed support; and an automatic fine adjustment mechanism is arranged between the base and the platform. The invention further discloses a detection method. The magnet on the magnetic drive pump is comprehensively and automatically detected, the detection time is shortened, the detection efficiency is improved, the labor cost is reduced, and the requirements of existing magnetic drive pump production are met; the measuring device is arranged for synchronously detecting or singly detecting magnets on the inner wall or the outer wall of the magnetic pump material to be detected according to requirements, so that the applicability is improved; the adjustable structure is arranged to adjust the position of the measuring device, so that the device can be used for magnet detection actions of magnetic drive pump materials with different specifications and sizes, the applicability is improved, and the equipment customization cost is reduced.

The utility model discloses a road building block laying device, and relates to the technical field of building block laying. The bottom of the bottom plate is provided with moving wheels; the top of the bottom plate is fixedly provided with a storage frame; one side of the storage frame is provided with a discharge port; one side of the storage frame is fixedly provided with a guide groove; two movable holes are formed in each of the two sides of the storage frame, a limiting correction assembly used for correcting the bricks is arranged in the storage frame, the movable holes are used in cooperation with the limiting correction assembly, a tamping assembly is arranged at one end of the L-shaped support, the bricks in the storage frame are limited and corrected by arranging the limiting correction assemblies, and the bricks are prevented from deviating and inclining; and meanwhile, the device can adapt to bricks of different sizes, the tamping assembly tamps the bricks laid on the ground, the bricks are tightly attached to the ground, the stability and firmness of road laying are enhanced, and the road quality is improved.