32results about How to "Suitable for teaching" patented technology

The invention discloses a multifunctional teaching device based on big data education, which relates to the field of big data teaching, and includes a support pole, the two sides of the support pole are vertically provided with turning grooves, and the support pole Near the top of the overturning groove, there is a lever groove vertically opened, and an extension pole is horizontally inserted into the inner side of the overturning groove, and a rolling ball is clamped on the bottom surface of the extension pole, and the top of the extension pole A top screw is threaded vertically downward, and a side chute is vertically opened on one side of the support pole, and a movable sleeve rod is vertically sleeved on the top of the support pole, and the movable sleeve The side of the rod is provided with a rotating groove, and the inner side of the rotating groove is clamped with a rotating disk. The device of the present invention has a simple design structure and is easy to operate. The storage-type design is adopted so that it does not take up space when not in use, and at the same time, it is convenient to move and carry. The combination of multiple functions makes it more suitable for teaching use.

The invention discloses a gyroscopic effect demonstrator. The gyroscopic effect demonstrator comprises a base. The gyroscopic effect demonstrator is characterized by further comprising a storage battery arranged on he base, a vertical rod, an electric brush carrier located on the vertical rod and formed by a bottom plate and a non-conductor electric brush sleeve rods equipped with upper and lower non-conductor electric brush sleeves, a rotating shaft crossed through a bottom plate hole on the bottom plate of the electric brush carrier and inserted to a blind hole of the vertical rod, a non-conductor metal electric brush ring base arranged with upper and lower metal electric brush rings on the rotating shaft, an operation handle fixed by a screw and an inside thread at the upper end face of the rotating shaft, and a U-shaped lower bracket, a reverse-U shaped upper bracket linked and rotated with two end parts of the U-shaped lower bracket through threads, and an airplane model body fixed on the reverse-U shaped upper bracket, wherein the lower end face of the airplane model body is provided with an upper airplane model plate arranged with a front support, a middle support and a back support, and the upper end face is provided with a lower airplane model plate arranged with a gyroscopic mini-sized direct current motor on an output shaft. Upper and lower electric brushes are arranged in the upper and lower non-conductor brush sleeves; upper and lower metal electric brush ring wiring terminals are drawn out by upper and lower metal electric brush rings. The gyroscopic effect demonstrator is applied to teach.

The invention provides an intelligent electronic blackboard, which comprises a blackboard adopting chalk for writing, and further comprises a touch screen overlapped with the blackboard and used for collecting contents written on the blackboard. a display screen arranged on the side surface of the blackboard. and a display control host respectively connected with the touch screen and the display screen, wherein the content collected by the touch screen is displayed on the display screen. In the invention, the touch screen is overlapped on the blackboard on the side of the display screen, and when a teacher writes and marks on the blackboard by using chalk, the written and marked content is displayed on the display screen on the side in real time and is also reserved on the blackboard, so that the blackboard is particularly suitable for teaching.

An education and teaching device comprises a box body device, a lifting device and a conversion device, wherein the lifting device and the conversion device are installed in the box body device, the conversion device is installed on the lifting device, cards are changed through the conversion device to assist learning, and the education and teaching device is high in interestingness, suitable forteaching, easy to operate, small in size, convenient to carry and high in practicability. The two display ports are directly compared, so the learning efficiency is improved.

The invention discloses a Mach-Zehnder fiber optic interferometer vibration influence testing system which comprises a Mach-Zehnder fiber optic interferometer, an excitation device and a monitoring device. The excitation device comprises a signal generator, a noise generator and a loudspeaker. The signal generator is used for generating vibration of certain frequency and amplitude. The loudspeaker is installed over a rectangular wood packaging box. The monitoring device comprises an acceleration sensor and a network analyzer. The influence on the Mach-Zehnder fiber optic interferometer from vibration is displayed simply and clearly, the influence on the Mach-Zehnder fiber optic interferometer from vibration carried out before a feedback control loop can be tested and measured, the amplitude and the frequency of generated vibration are adjusted at any time, and the system is simple in structure, easy to operate and suitable for teaching.

The invention relates to the technical field of paper sludge, and in particular to a paper sludge preparation method and a paper sludge preservation method. The paper sludge preparation method comprises the following steps: (A) collecting waste paper, and crushing the waste paper so as to obtain scrap paper; (B) soaking the scrap paper, stirring the scrap paper, dehydrating the scrap paper, and purpling the scrap paper so as to obtain paper pulp; and (C) adding a conditioning agent into the paper pulp, and performing stirring, thereby obtaining paper sludge, wherein the weight part ratio of the paper pulp to the conditioning agent is (1-2):(3-5); and the conditioning agent comprises the following raw materials in parts by weight: 1000-1200 parts of water, 300-400 parts of white latex, 750-900 parts of cellulose, 0.1-5 parts of a dispersing agent and 1-5 parts of a preservative. The paper sludge prepared by using the paper sludge preparation method is free of cracking when being dried, is dry and firm, is free of moisture absorption, and is good in texture quality after being hardened; and paper cakes which are prepared from the paper pulp through extrusion, dehydration and drying can be preserved for a long time, and the paper pulp does not stink.