Abstract: A fluid transfer pump comprises: a housing, a pump unit, an electric motor assembly, a power supply mounting base, and a speed change mechanism, wherein the pump unit comprises an impeller; the electric motor assembly is used to drive the impeller to rotate around an axis of the impeller; the power supply mounting base is used to receive a power supply for supplying electricity to the pump unit; and the speed change mechanism is arranged between the pump unit and the electric motor assembly. The power supply mounting base is arranged in a power supply compartment; and the pump unit, the speed change mechanism, the electric motor assembly, and the power supply compartment are successively arrayed in an extension direction of the axis of the impeller.

Abstract: The present disclosure relates to a method for controlling a movable platform. The method may include obtaining a target object selection operation input by a user on an interaction interface, the interaction interface displaying a three-dimensional model of an operation area, the target object selection operation configured to determine a position of a target object in the operation area; determining a target orientation of the movable platform when the target object is operated based on an orientation of the three-dimensional model displayed on the interaction interface when the target object selection operation is obtained; and determining a target position of the movable platform when the movable platform performs operation on the target object based on the position of the target object, the target orientation, and an operation distance of the movable platform.

Abstract: The present disclosure provides a highly-reliable insulating ultra-small electromagnetic relay, comprising a coil portion and static spring portions. The coil portion comprises a bobbin; the bobbin comprises two flanges that are located at the two end portions of the bobbin; each static spring portion comprises a static spring provided at at least one end of the bobbin; the static spring comprises a contact portion comprising a static contact; the contact portion of the static spring is provided at the position close to the flange of the bobbin; and in each flange of the bobbin, a first retaining wall and a second retaining wall used for together limiting the position of the contact portion of the static spring in two horizontal directions are respectively and upwardly arranged in a protruding mode.

Abstract: The present application discloses a display panel and a preparation method thereof, and a display device. The display panel includes a base substrate, and has a display area, a peripheral area surrounding the display area, a hole area located at the display area, and an isolation area located between the hole area and the display area. The display area includes an electroluminescent device located on the base substrate, and a packaging structure for sealing the electroluminescent device, the packaging structure includes an inorganic packaging layer and an organic packaging layer alternately stacked, and the inorganic packaging layer extends to the hole area. The isolation area includes an organic layer located on the inorganic packaging layer.

Abstract: Provided is a node diaphragm scraping and sorting device for a bamboo split, which is configured to scrape node diaphragms of the bamboo splits and to sequentially sort the bamboo inner layers and bamboo outer layers of the bamboo splits towards the same direction. The device includes a scraping device, a sorting device and a clamping and conveying device which are arranged from front to back along an axis. The scraping device includes a conical cylinder, two pressing semi-rings, and a scraping ring. The sorting device includes an e-shaped sleeve composed of an inner cylinder and an outer cylinder, and two shifting forks located at both ends of the sleeve. The clamping and conveying device includes an inner ring moving on the axis, two clamping semi-rings and a conveying power device. The structure, function and technical parameters of each branch device are also introduced in detail.

Abstract: Disclosed in the utility model is a vertical latch locking mechanism for a rotating seat, including a vertical latch locking mechanism mounted on a rotating disc in a seat rotation mechanism, at least one lockhole provided on a disc surface of a fixed disc in the seat rotation mechanism, and at least one first lock pin hole provided on the rotating disc. The lockhole is aligned with the first lock pin hole, and the vertical latch locking mechanism includes: a locking pin bracket fixed on the rotating disc; and at least two lock pins vertically and moveably configured on the locking pin bracket. A first end of the lock pin passes through the first lock pin hole and is inserted into the lockhole, to implement locking. In the utility model, a horizontal locking mechanism is changed to a vertical latch mechanism, radial sizes of the rotating disc and the fixed disc are greatly reduced, and a diameter can be reduced to less than 200 mm.

Abstract: An information display method, a device and a storage medium. The method includes: acquiring a first image including a first object in a video, determining whether a second object is present in the first image, and when it is determined that the second object is present in the first image and that the second object satisfies a preset positional relationship with the first object, superimposing a first material on an area where the second object is located in the first image. Using the above method, it is realized that when the second object is detected in the image, any material is superimposed on the area where the second object is located, so as to avoid the problem of not being able to use part of special effects or express information when the second object satisfies the preset positional relationship with the first object.

Abstract: The disclosure provides an ultrasonic signal detection circuit including a sensing circuit, a unidirectional conduction circuit and a source follower circuit. The sensing circuit is connected to an input terminal of the source follower circuit through the unidirectional conduction circuit; the sensing circuit is configured to generate a piezoelectric signal according to a received ultrasonic echo signal and output the piezoelectric signal to the unidirectional conduction circuit. The piezoelectric signal is an alternating current signal; the unidirectional conduction circuit is configured to rectify the alternating current signal to only allow a forward or a reverse current portion thereof to pass through. The forward/reverse current portion charges/discharges the input terminal of the source follower circuit after passing through the unidirectional conduction circuit.

Abstract: An epoxy resin composition, a transparent composite material including the same, and a laminated board. The epoxy resin composition includes an epoxy resin A and an epoxy resin B. The refractive index of the epoxy resin A is 1.54-1.8 and the light transmittance of the epoxy resin A is 90%. The refractive index of the epoxy resin B is 1.54-1.8 and the light transmittance of the epoxy resin B is greater than 90%. The epoxy resin A is an organosilicon modified epoxy resin. The epoxy resin B is another type of epoxy resin. The organosilicon modified epoxy resin satisfying a specific condition and another type of epoxy resin also satisfying the specific condition are combined to form a specific epoxy resin composition. The composite material prepared from the epoxy resin composition, a curing agent, and a curing accelerator has the advantages of having high light transmittance and high bending strength, and also has high bonding strength.

Abstract: An esterification method for improving the dispersibility of a hydroxyl-containing nano-material is disclosed herein. The method comprises: S1, thoroughly stirring and uniformly mixing a hydroxyl-containing nano-material precursor and an organic solvent to obtain a mixture; S2, heating and fully pre-reacting the mixture in step S1; and S3, adding an acyl halide to the solution which is heated and fully pre-reacted in step S2, and then further reacting same to finally obtain a surface-modified hydroxyl-containing nano-material.

Abstract: An embodiment of the present invention provides a scanning control system for a magnetic resonance imaging system, comprising: a first 3D camera, configured to capture a three-dimensional image of a scan subject located on a scanning table of the magnetic resonance imaging system; a processing device, configured to identify body position information of the scan subject based on the three-dimensional image; and a control device, configured to set scanning parameters related to a body position based on the body position information.

Abstract: A high-efficiency and short-process method for preparing a high-strength and high-conductivity copper alloy is disclosed, comprising the following steps: performing horizontal continuous casting to obtain an as-cast primary billet of copper alloy, wherein the alloying elements in the obtained as-cast primary billet being in a supersaturated solid solution state; after peeling the obtained as-cast primary billet, directly performing continuous extrusion, cold working and aging annealing treatment to obtain a copper alloy, and keeping the alloying elements of the billet in a supersaturated solid solution state during the process of continuous extrusion. The method shortens the flow, reduces energy consumption and improves the product forming rate.

Abstract: The present disclosure provides an electronic apparatus (1000, 2000, 4000), including a housing. One end of the housing is provided with an accommodating cavity (1200, 2100, 4100). A sound guide assembly is provided in the accommodating cavity. The sound guide assembly includes a sound box (1300, 2200, 4200) and a sound guide device (2300, 4300). The sound guide device includes a sound receiving portion (2310) and a sound guide body (2320). The sound receiving portion is connected with the sound box. The sound guide body is configured to lead out a sound. An end surface (2312) of the sound receiving portion includes a sound inlet (2311, 4311). A tail end of the sound guide body deviating from the sound receiving portion includes a sound outlet (2321, 4321). A vertical height of a tail end of the sound guide body is smaller than that of the sound receiving portion.

Abstract: A ribbon carrier assembly, a welding device, and a welding method for preprocessing between a battery sheet and a ribbon are disclosed. The carrier assembly includes a carrier seat; a carrier body, rotatably connected to the carrier seat; and a driving assembly, connected to the carrier body and configured to control the rotation of the carrier body. At least one operation surface is arranged on the carrier body and is arranged as a curved surface. Adsorption holes are arranged on the operation surface. The battery sheet is adsorbed and fixed to the operation surface by applying a negative pressure to the adsorption holes. Through tins, dry joints between the battery sheet and the ribbon can be reduced during welding of the ribbon and the battery sheet. The battery sheet is bent on the curved surface to avoid warping or cracking of the battery sheet caused by excessive heating.

Abstract: A shooting method is provided, including: obtaining position information of a shooting object; planning a first circumnavigation route and a second circumnavigation route for surrounding shooting of the shooting object based on the position information; controlling a UAV to move along the first circumnavigation route and the second circumnavigation route respectively; and controlling the UAV to shoot the shooting object by a camera mounted on the UAV during movement to obtain multiple images of the shooting object. Images collected on the first circumnavigation route and images collected on the second circumnavigation route share homologous image points of the shooting object. The images are used to establish a three-dimensional model of the shooting object. Thus, the shooting efficiency of the UAVs is improved for shooting images for three-dimensional reconstruction.