Abstract: A compressor, comprising: a housing (101) provided with a rotor accommodating cavity (105) and an exhaust cavity (180); and a pair of screw rotors (110) at least partially located in the rotor accommodating cavity (105), a compression accommodating cavity (150) being formed between teeth of the pair of screw rotors (110) and the housing (101), and the pair of screw rotors (110) having a suction end (112) and an exhaust end (113), wherein the housing (101) further comprises an unloading channel (208) and a connecting channel (308), the unloading channel (208) is provided with an unloading channel inlet (216) and an unloading channel outlet (217), the unloading channel inlet (216) can be communicated with the compression accommodating cavity (150) through the connecting channel (308), and the unloading channel outlet (217) is communicated with a suction side of the compressor; and an unloading device (109) configured to controllably open or close the connecting channel (308), such that the compression accommoda

Abstract: The present disclosure relates to a content input method and apparatus for instant messaging software, and a device and a medium. The instant messaging software includes a first input box and a second input box, wherein the first input box and the second input box are switched by means of a switching control, and the sizes of the first t input box and the second input box are different. The method comprises: receiving target input content, which is input into a first input box, and displaying the target input content in the first input box; and in response to the triggering of a switching control, displaying the target input content in a second input box.

Abstract: Embodiments of this application provide a power receiving apparatus, a power sending apparatus, and a power transmission method. A battery and protection circuit module is configured to obtain battery impedance. A first microcontroller module is configured to send a driving signal to an impedance transformation module based on a preset optimal value of input impedance of the impedance transformation module and the battery impedance, to adjust a duty cycle of a driving signal in the impedance transformation module, to enable the impedance transformation module to output a target voltage. The duty cycle is a ratio of high-level duration of the driving signal in one cycle to one cycle. When the impedance transformation module outputs the target voltage, the input impedance is at an optimal value of the input impedance.

Abstract: A large-aperture four-piece optical lens includes a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with positive focal power which are sequentially arranged. A back of the fourth lens is provided with an image surface, an aperture diaphragm is arranged at a front end of the first lens or between the second lens and the third lens, and a vignetting diaphragm is arranged on an S7 surface of the fourth lens. An equivalent focal length of the fourth lens is greater than that of the third lens, and the equivalent focal length of the fourth lens is greater than that of the first lens. Each lens has a low sensitivity to an axial tolerance and a low assembly difficulty, and an energy utilization rate can be improved by increasing a numerical aperture.

Abstract: A system and a method for high-speed dual-view band-limited illumination profilometry using temporally interlaced acquisition is disclosed. The method comprises using a projecting unit for projecting sinusoidal fringe patterns onto an object and capturing fringe patterns deformed by the object. A 3D image of the object is recovered pixel by pixel from partial images provided by a first camera and a second camera by locating a point in the images of the second camera that matches a selected pixel of the first camera. 3D coordinates and wrapped phase are then estimated based on a calibration of the cameras and determining an horizontal coordinate on the plane of a projector of the projecting unit based on a calibration of the projector, and using a wrapped phase value to recover a 3D point of 3D coordinates (x, y, z).

Abstract: An AI-based object classification method and apparatus, a computer-readable storage medium, and a computer device. The method includes: obtaining a target image to be processed, the target image including a target detection object; separating a target detection object image of the target detection object from the target image; inputting the target detection object image into a feature object prediction model to obtain a feature object segmentation image of a feature object in the target detection object image; obtaining quantitative feature information of the target detection object according to the target detection object image and the feature object segmentation image; and classifying the target detection object image according to the quantitative feature information to obtain category information of the target detection object in the target image.

Abstract: Systems, methods, and computer-readable media for an integrated Wi-Fi Access Point and cellular network Radio Unit (RU) include a communication system interfacing with a wired network for communicating Wi-Fi traffic and cellular network traffic, the communication system integrating a Wi-Fi Access Point (AP) with a cellular network Radio Unit (RU). The Wi-Fi traffic and cellular network traffic can be processed in the communication system. The communication system can interface with at least one programmable Radio Frequency (RF) front end configured for wireless communication over one or more frequency bands for Wi-Fi traffic and one or more frequency bands for cellular network traffic (e.g., 5G, LTE, Wi-Fi).

Abstract: Disclosed is a middle frame assembly, including a middle plate and a frame disposed around an outer edge of the middle plate, where the middle plate includes a first carbon fiber reinforced resin composite material base body and a first metal plating layer compounded on a surface of the base body. Some embodiments of this application further provide a preparation method for a middle frame assembly and an electronic device in the middle frame assembly. Some embodiments of this application use a carbon fiber reinforced resin composite material as a middle plate base body of the middle frame assembly.

Abstract: This application discloses a method for processing group information. When an upper limit of a number of people in a target group needs to be expanded, an expansion request is transmitted based on triggering by a first user on the target group. The expansion request includes an identification of the target group, and the expansion request is configured to request for expanding an upper limit of a number of group members of the target group. A second user with expansion permission may configure the upper limit of the number of the target group based on the expansion request. In response to a configuration by the second user on the target group, an expansion response is transmitted to a client of the first user, where the expansion response is configured to indicate a result of expansion on the target group.

Abstract: A coupling has a housing and a returning unit and a turbo fan coaxially disposed within the housing. The housing has a first shell and a second shell coaxially connected to the first shell. The first shell has multiple driving ribs therein. Each driving rib has a guiding plate, a driving plate connected to the guiding plate, and an included angle defined between the driving plate and the guiding plate of the driving rib. The second shell has multiple divergent ribs therein. Fluid introduced into the housing is guided to the multiple driving ribs of the first shell via the divergent ribs of the second shell. The fluid pushes the driving plate of each driving rib and facilitates the housing to spin and drive a driven device. Therefore, the coupling of the present invention can save energy consumption for driving a driven device.

Abstract: The present disclosure relates to a method for training a neural network model performed at an electronic device. The method includes: performing initial training by using a first training sample set to obtain an initial neural network model; performing a prediction on a second training sample set by using the initial neural network model to obtain a prediction result of each of training samples in the second training sample set; determining a plurality of preferred samples from the second training sample set based on the prediction results; adding the plurality of preferred samples that are annotated to the first training sample set to obtain an expanded first training sample set; updating training of the initial neural network model by using the expanded first training sample set to obtain an updated neural network model until a training ending condition is satisfied.

Abstract: This application discloses a method for processing group information. When an upper limit of a number of people in a target group needs to be expanded, an expansion request is transmitted based on triggering by a first user on the target group. The expansion request includes an identification of the target group, and the expansion request is configured to request for expanding an upper limit of a number of group members of the target group. A second user with expansion permission may configure the upper limit of the number of the target group based on the expansion request. In response to a configuration by the second user on the target group, an expansion response is transmitted to a client of the first user, where the expansion response is configured to indicate a result of expansion on the target group.

Abstract: The present disclosure relates to a content input method and apparatus for instant messaging software, and a device and a medium. The instant messaging software includes a first input box and a second input box, wherein the first input box and the second input box are switched by means of a switching control, and the sizes of the first t input box and the second input box are different. The method comprises: receiving target input content, which is input into a first input box, and displaying the target input content in the first input box; and in response to the triggering of a switching control, displaying the target input content in a second input box.

Abstract: A medical image processing method includes: obtaining a biological tissue image including a biological tissue, recognizing, in the biological tissue image, a first region of a lesion object in the biological tissue; recognizing a lesion attribute matching the lesion object; dividing an image region of the biological tissue in the biological tissue image into a plurality of quadrant regions; obtaining target quadrant position information of a quadrant region in which the first region is located; and generating medical service data according to the target quadrant position information and the lesion attribute.

Abstract: This application provides a probe structure for radio frequency testing, and a radio frequency test apparatus and system, and relates to the field of radio frequency testing, to resolve the problem of a waste of space in a terminal caused by that a relatively large volume of a probe cylinder of a probe structure in radio frequency testing requires a relatively large avoidance space during testing to avoid the probe cylinder. This application provides a probe structure for radio frequency testing, including a housing, a medium, a first test probe, and a second test probe. The medium is arranged in the housing, the first test probe is arranged in the medium, a signal end of the first test probe is connected to a signal line of the radio frequency connector, and the first test probe is coaxial with the medium. The second test probe is arranged on the housing, and test ends of the first test probe and the second test probe are located at a same end of the housing.

Abstract: A medical image region screening method and apparatus and a storage medium are provided. The method includes: obtaining a medical image of biological tissue, segmenting tissue regions of a plurality of tissue types from the medical image, selecting, from the tissue regions of the plurality of tissue types based on types of capturing positions of the medical image, a reserved region, obtaining a positional relationship between the reserved region and a predicted lesion region in the medical image; and screening for the predicted lesion region in the medical image based on the positional relationship, to obtain a target lesion region.

Abstract: A method for 3D surface imaging of an object, comprising generating a sinusoidal pattern from an input beam; projecting the sinusoidal pattern onto the object; acquiring deformed structured images from the object; reconstructing and displaying the surface of the object in real-time. A system comprises an device encoding an input beam with a structured pattern; a filter configured to spatially filter the encoded beam; a projector lens projecting the structured pattern onto the object; a high speed camera acquiring a structured pattern deformed by the 3D surface of the object; a graphic processing unit; and a CoaXPress interface transferring data acquired by the camera to the graphic processing unit; the graphic processing unit reconstructing and displaying the 3D surface of the object in real-time.

Abstract: A medical image processing method includes: obtaining a biological tissue image including a biological tissue, recognizing, in the biological tissue image, a first region of a lesion object in the biological tissue; recognizing a lesion attribute matching the lesion object; dividing an image region of the biological tissue in the biological tissue image into a plurality of quadrant regions; obtaining target quadrant position information of a quadrant region in which the first region is located; and generating medical service data according to the target quadrant position information and the lesion attribute.

Abstract: Provided in embodiments of this application are a transmission assembly and a foldable electronic device. The transmission assembly includes a first transmission assembly. The first transmission assembly is configured for use in a bending area of the foldable electronic device. The first transmission assembly includes at least two first conductive layers and a first transmission layer located between the two first conductive layers. Each first conductive layer includes at least a first conductive fabric, and the first transmission layer includes at least one first signal line. A dielectric layer is further arranged between the first conductive layer and the first transmission layer, and the dielectric layer includes at least a first substrate layer.

Abstract: The implementation of this application provides a power management method, a terminal. The method includes: obtaining a configuration change signal of a terminal device in response to a configuration change of the terminal device; obtaining an output power level truth table of the terminal device based on the configuration change signal of the terminal device, where the output power level truth table includes a configuration of the terminal device and a power level and a fallback power of the terminal device in the configuration; obtaining the power level and the fallback power of the terminal device based on the output power level truth table; setting an output power of the terminal device based on the fallback power of the terminal device, and outputting a corresponding power value based on the power level.