Abstract: A software update method includes: receiving, by a target vehicle, first indication information, the first indication information being used to instruct to report version information of target software; sending, by the target vehicle, current version information of the target software configured on the target vehicle to a first control node currently establishing a communication connection with the target vehicle; further, receiving, by the target vehicle, second indication information sent by the first control node, the second indication information being used to indicate updated version information of the target software; and updating, by the target vehicle, the target software according to the second indication information.

Abstract: The present application discloses spiral water intake valves and fire-fighting robots. The spiral water intake valve includes a valve body. A main valve core and a spiral water intake mechanism are provided in the valve body. The spiral water intake mechanism includes a mating connector and a connecting base. The main valve core includes a main valve sealing base and a main valve screw. A water intake channel is provided in the center part of an upper valve cover of the valve body, the mating connector is provided in the water intake channel, the main valve sealing base is sealedly connected to the upper valve cover, and the main valve screw is threadedly connected to the connecting base. The fire-fighting robot includes a chassis and a track. At least one spiral water intake valve is provided on the track. A valve opening mechanism is provided on the chassis.

Abstract: A metal mesh includes: first metal lines (11) and second metal lines (12) extending in crossed directions. The first metal lines (11) are arranged side by side in a first direction and extend in a second direction; the second metal lines (12) are arranged side by side in the first direction and extend in a third direction. Each first metal line (11) includes first sub-line segments sequentially connected together in the second direction, and each second metal line (12) includes second sub-line segments sequentially connected together in the third direction. Each first sub-line segment has a midpoint superposing with a midpoint of one of the second sub-line segments, the first and second sub-line segments having superposed midpoints form a crossed structure (10), and define two opposite first angles (?1) and two opposite second angles (?2). Each first angle (?1) is not greater than each second angle (?1).

Abstract: A dual-polarized magnetoelectric dipole antenna, including a reflection plate, electric and magnetic dipoles, where the electric dipole includes four first electrodes; the magnetic dipole includes four second electrodes; the second electrodes are in one-to-one correspondence with the first electrodes, and each second electrode is connected between a corresponding first electrode and the reflection plate; each first electrode includes first and second sides connected to each other; the first side of the first electrode is adjacent to the first side of one adjacent first electrode, and the second side of the first electrode is adjacent to the second side of other one adjacent first electrode; each second electrode includes two sub-electrodes connected to the first and second sides of a corresponding first electrode, respectively; the sub-electrode has a slit opening therein, and an extending direction of the slit opening is parallel to a plane where the reflection plate is located.

Abstract: A method includes generating address allocation capability indication information and sending the address allocation capability indication information to a second node. The address allocation capability indication information indicates an address allocation capability of a first node, so that the address allocation capability is notified to the second node through the address allocation capability indication information.

Abstract: This application discloses example data transmission methods and apparatus. An example method includes obtaining, by a first device, a first data packet, where the first data packet includes data and first information. The first information includes a source network address, a destination network address, a source transport layer port number, and a destination transport layer port number. The first information corresponds to a first communication protocol. Second information is determined based on a first mapping relationship, where the second information corresponds to a second communication protocol. A second data packet is generated by the first device, where the second data packet includes the data, a communication protocol source address, a communication protocol destination address, a communication protocol source port number, and a communication protocol destination port number. The second data packet is sent by the first device.

Abstract: A frequency selective surface unit includes dielectric substrate(s), first resonant pattern(s) and second resonant pattern(s). A first resonant pattern is disposed on a dielectric substrate. Each of the first resonant pattern(s) includes a plurality of protruding portions. A second resonant pattern is disposed on the dielectric substrate; and the second resonant pattern and the first resonant pattern have a distance therebetween in a direction parallel to a plane where the dielectric substrate is located and/or a direction perpendicular to the dielectric substrate.

Abstract: This application provides a transmission method and apparatus, and a terminal, and the method may be applied to the communication field. The method includes: A media player receives first indication information and second indication information that are sent by a media controller, where the first indication information indicates control signaling, the second indication information indicates an signaling scope of the control signaling, and the signaling scope indicates that the control signaling acts on the media player; or the signaling scope indicates that the control signaling acts on devices in a device set, and the device set includes the media player; and the media player performs a corresponding operation based on the first indication information and the second indication information.

Abstract: Provided is a liquid crystal antenna, which includes a first substrate and a second substrate which are oppositely arranged; a liquid crystal layer located between the first substrate and the second substrate; a first electrode located on one side of the first substrate close to the liquid crystal layer; a second electrode located on one side of the second substrate close to the liquid crystal layer; a feeder line located on one side of the second substrate far away from the second electrode and electrically connected with the second electrode; an encapsulation layer located between the first substrate and the second substrate and surrounding the liquid crystal layer; and a side electrode assembly including a plurality of side electrodes.

Abstract: The present disclosure provides a filtering antenna. The filtering antenna includes: a ground layer, a first dielectric layer, a second dielectric layer and a radiating patch and a coupling probe. The coupling probe includes a microstrip line sandwiched between the first and second dielectric layers, and includes a feeder that penetrates the first dielectric layer. The microstrip line includes a trunk line and an open-circuit branch line connected to the trunk line. A distance between a feed center of the microstrip line and a first end of the trunk line is D1, and a distance between an orthographic projection of the first end of the trunk line on the second dielectric layer and an orthographic projection of an edge of the radiating patch on the second dielectric layer is D4, where 2.5?D1/D4?3.0.

Abstract: An antenna unit and a preparation method therefor, an antenna array, and an electronic device. The antenna array comprises at least one antenna unit. The antenna unit comprises: a substrate (2) comprising a first surface and a second surface which are arranged opposite to each other in the thickness direction of the substrate (2); a first radiation patch (3) disposed on the first surface of the substrate (2); feed lines (4) disposed on the first surface of the substrate (2), the feed lines (4) being connected to the first radiation patch (3); and a second radiation patch (5) suspended on the side of the first radiation patch (3) away from the substrate (2), the orthographic projection of the second radiation patch (5) on the substrate (2) overlapping the orthographic projection of the first radiation patch (3) on the substrate (2).

Abstract: A liquid crystal antenna and a communication device. The liquid crystal antenna includes: a first substrate; a second substrate; a plurality of antenna structures; a grounding electrode located on the side of the second substrate away from the antenna structures; each antenna structure includes a first microstrip line, a second microstrip line, and a liquid crystal layer, the first microstrip line includes first sub-microstrip lines and second sub-microstrip lines connected to the first sub-microstrip lines, the second microstrip line includes third sub-microstrip lines and fourth sub-microstrip lines connected to the third sub-microstrip lines, the first sub-microstrip lines and the third sub-microstrip lines all extend in a first direction and is arranged in a second direction, the orthographic projection of the liquid crystal layer covers at least part of the area of the orthographic projection of the first sub-microstrip lines and the orthographic projection of the plurality of third sub-microstrip lines.

Abstract: Provided are a medical hydrogel containing ultrasonically-imageable bubble microspheres and a preparation method thereof. The medical hydrogel containing the ultrasonically-imageable bubble microspheres is formed by in-situ crosslinking of a polyethylene glycol precursor solution and a poly-amino crosslinker solution containing bubble microspheres, the polyethylene glycol precursor solution consisting of a multi-arm polyethylene glycol derivative and a buffer solution A.

Abstract: Disclosed are a coagulation factor VIII fusion protein which is conjugated with polyalkylene glycol and which has an extended cyclic half-life, a preparation method therefor and a use thereof, wherein the active moiety of the coagulation factor VIII is directly linked or indirectly linked by a peptide linker to a fusion partner, and the fusion protein is further conjugated to a polyalkylene glycol. The half-life is significantly increased compared to an FVIII fusion protein modified without polyalkylene glycol.

Abstract: This application provides a communication method, a communication apparatus, a computer-readable storage medium, and a computer program product in the communication field. In the technical solutions of this application, a streaming media source may provide different multicast services for different streaming media sinks in terms of a streaming media application, to provide streaming media services with different requirements for the different streaming media sinks in terms of the streaming media application.

Abstract: An antenna and an electronic device are provided in the present disclosure. The antenna includes a first conductive layer, a dielectric layer, and a second conductive layer which are stacked; the first conductive layer is provided as a microstrip line structure; the second conductive layer is provided with a radiation structure and a director; the radiation structure includes a first edge and a second edge disposed oppositely along a first direction; the radiation structure is provided with a first slot, a second slot, and a third slot that are sequentially communicated along the first direction and away from the first edge, the first slot is circular, the second slot is rectangular, and the third slot gradually increases in dimension in the second direction; the director is disposed on the second conductive layer and located at a side of the third slot away from the second slot.

Abstract: A metal mesh includes: first metal lines (11) and second metal lines (12) extending in crossed directions. The first metal lines (11) are arranged side by side in a first direction and extend in a second direction; the second metal lines (12) are arranged side by side in the first direction and extend in a third direction. Each first metal line (11) includes first sub-line segments sequentially connected together in the second direction, and each second metal line (12) includes second sub-line segments sequentially connected together in the third direction. Each first sub-line segment has a midpoint superposing with a midpoint of one of the second sub-line segments, the first and second sub-line segments having superposed midpoints form a crossed structure (10), and define two opposite first angles (?1) and two opposite second angles (?2). Each first angle (?1) is not greater than each second angle (?1).

Abstract: The device of processing data based on the radio frequency identification includes: a receiving antenna used to receive a first radio frequency signal; a first front-end module electrically connected to the receiving antenna, wherein the first front-end module is used to receive and amplify the first radio frequency signal; a first radio frequency integrated circuit electrically connected to the first front-end module, wherein the first radio frequency integrated circuit is used to demodulate the amplified first radio frequency signal sent by the first front-end module to obtain a first baseband signal; and a baseband chip electrically connected to the first radio frequency integrated circuit, wherein the baseband chip is used to receive the first baseband signal, decode the first baseband signal, and output a data processing result. The present disclosure further provides an office device, an office method, an office apparatus, a storage medium and a program product.

Abstract: The present application discloses audio mixing methods and related apparatuses. An example method includes: receiving at least one piece of indication information from at least one audio source device, where the at least one piece of indication information corresponds to at least one audio stream generated by the at least one audio source device. The method further includes determining an audio mixing weight of the at least one audio stream based on the at least one piece of indication information.

Abstract: A method for determining a processing capability includes: a first node sends a message to a second node. The message includes extension header processing capability information, and the extension header processing capability information is used to indicate a processing capability of the first node for an Internet Protocol (IP) version 6 (IPv6) extension header. After receiving the message, the second node obtains, based on the extension header processing capability information, the processing capability of the first node for the IPv6 extension header to determine whether the first node needs to forward or receive a packet.