Abstract: A method is described for operating a motorized vehicle step that comprises driving, by a first motor assembly, a first step bracket to move a step, coupled to the first step bracket, between a first extended position and a first retracted position; driving, by a second motor assembly, a second step bracket to move a step, coupled to the second step bracket, between a second extended position and a second retracted position, wherein the second extended position is aligned with the first extended position, and wherein the second retracted position is aligned with the first retracted position; and retaining, by the first motor assembly and the second motor assembly, the first step bracket and the second step bracket in the first retracted position and the second retracted position, respectively, by a reverse self-locking effect of the first motor assembly and the second motor assembly, respectively.

Abstract: Provided is an antenna. The antenna includes: a first antenna unit and a second antenna unit, wherein the first antenna unit includes a first phase-tuning structure and a first radiation structure, and the second antenna unit includes a second phase-tuning structure and a second radiation structure; wherein a first feed terminal of the first phase-tuning structure is electrically connected to the first radiation structure, and a first feed terminal of the second phase-tuning structure is electrically connected to the second radiation structure; and a feed direction of the first feed terminal of the first phase-tuning structure to the first radiation structure is a first direction, and a feed direction of the first feed terminal of the second phase-tuning structure to the second radiation structure is a second direction, the first direction being different from the second direction.

Abstract: A video playing method and apparatus, and a device and a storage medium are disclosed. The method includes: playing a first video, wherein first background music in the first video is similar music matching with reference music in a preset music dimension; in response to a first switching operation triggered on the first video, switching the first video to a second video, and playing the second video, wherein second background music in the second video is similar music that matches the reference music in a preset music dimension and is different from the first background music.

Abstract: A video playing method and apparatus, and a device and a storage medium are disclosed. The method includes: presenting a target music page corresponding to target music, wherein the target music page includes a video recommendation control; in response to a trigger operation acting on the video recommendation control, playing a first video in a video recommendation page, wherein first background music in the first video is similar music that matches the target music in a preset music dimension.

Abstract: An antenna includes first and second phase adjustment structures, first and second feed lines, and a first radiation structure. The first phase adjustment structure includes first and second transmission lines, and the second phase adjustment structure comprises third and fourth transmission lines. Each of the first and second feed lines has a first end and a second end. The first end of the first feed line, the second end of the first feed line, the first end of the second feed line, and the second end of the second feed line are electrically connected to the first transmission line, the second transmission line, the third transmission line, and the fourth transmission line, respectively. The first and second feed lines are both electrically connected to the first radiation structure, and a feed direction of the first feed line is different from a feed direction of the second feed line.

Abstract: A display device includes a flexible display panel including a display part and a bonding part, the bonding part being located on the back side of the display part, and a side of the bonding part away from the display part being the bonding side, the driving chip being arranged on the bonding side of the bonding part, and having a first side and a second side opposite in the first direction, where the first direction is perpendicular to the thickness direction; a spacer being disposed on the bonding side of the bonding part, where the spacer is located on one side or both sides of the driving chip in the first direction, and a thickness of the spacer is greater than a thickness.

Abstract: A protective shell for a vehicle winch includes a first shell and a second shell. The first shell has a first end and a second end that are oppositely arranged in a first direction. The first end of the first shell is detachably connected to a rope guide of the vehicle winch. The first shell includes a through hole penetrating the first shell along the first direction and configured to accommodate at least a part of a buffer member of the vehicle winch. The second shell is detachably connected to the second end of the first shell to open and close the through hole.

Abstract: In accordance with an embodiment, a method includes receiving, on a first Bluetooth link between a first gateway and a first Bluetooth device, a first Bluetooth message sent by the first Bluetooth device; encapsulating, using a transport protocol adapted to a non-Bluetooth link between the first gateway and a second gateway, the first Bluetooth message to obtain a second Bluetooth message; and sending the second Bluetooth message to the second gateway on the non-Bluetooth link, wherein the second gateway decapsulates the second Bluetooth message using the transport protocol to obtain the first Bluetooth message, and sends the first Bluetooth message to a second Bluetooth device on a second Bluetooth link with the second Bluetooth device, wherein the non-Bluetooth link is a wireless local area network link or a wired link.

Abstract: A liquid crystal antenna is provided. The liquid crystal antenna includes a liquid crystal layer, a first substrate, a second substrate, a first connection portion and a second connection portion. The first substrate and the second substrate are located on both sides of the liquid crystal layer in a first direction. The first substrate includes a plurality of first control lines, and the second substrate includes a plurality of second control lines. The first connection portion and the second connection portion are located on the same side edge of the liquid crystal antenna and are staggered in the first direction. The first connection portion is electrically connected to the plurality of first control lines, and the second connection portion is electrically connected to the plurality of second control lines.

Abstract: The present disclosure provides a radio frequency apparatus, an antenna and an electronic device, and belongs to the field of communication technology. The radio frequency apparatus includes first and second dielectric substrates opposite to each other, first and second phase shifting structures between the first and second dielectric substrates; wherein the radio frequency apparatus further includes a first connection electrode and a second connection electrode; the first phase shifting structure and the second phase shifting structure each have a first end and a second end, the first ends of the first phase shifting structure and the second phase shifting structure are electrically connected to each other by the first connection electrode; the second ends of the first phase shifting structure and the second phase shifting structure are electrically connected to each other by the second connection electrode, to form a ring circuit structure.

Abstract: Disclosed is a ladder assembly and a vehicle with a ladder assembly. In some aspects, the ladder assembly includes a mounting frame, a first ladder frame, and a second ladder frame, wherein the first ladder frame is pivotally connected with the mounting frame so that the first ladder frame swings between a stowed position and a deployed position relative to the mounting frame, and the second ladder frame is slidably connected with the first ladder frame so that the second ladder frame moves between an extended position and a retracted position relative to the first ladder frame.

Abstract: An antenna, a control method for an antenna, an antenna array and an electronic device are provided, and belong to the field of communication technology. The antenna includes a first tunable dielectric layer between the first dielectric substrate and the second dielectric substrate opposite to each other; a radiation component and at least one first tuning electrode on the first dielectric substrate; at least one second tuning electrode and a reference electrode layer on the second dielectric substrate; orthographic projections of the radiation component, the first tuning electrode and the second tuning electrode on the first dielectric substrate overlap with an orthographic projection of the reference electrode layer on the first dielectric substrate. Orthographic projections of each first tuning electrode and a corresponding second tuning electrode on the first dielectric substrate at least partially overlap with each other, to form a tunable capacitor electrically connected to the radiation component.

Abstract: A step device and a vehicle are provided. The step device includes a first step assembly. The first step assembly includes a step body, a stepping-on support member, and a fastener. The step body includes a first connection part. The stepping-on support member is provided on the step body. The stepping-on support member is provided on the first connection part of a second connection part. The position of the stepping-on support member is adjustable along the length direction of the step body. The fastener is detachably connected to the first connection part and the second connection part to secure the stepping-on support member to the step body.

Abstract: The present application discloses an oil supply device for a compressor, a compressor, and refrigeration equipment. The oil supply device for a compressor includes: a piston cylinder with an inner chamber, a piston, and an outer housing; the outer housing includes a housing body and a separator, the separator has a separation board and a partition plate, forming an oil chamber between the separation board and the bottom of the housing groove, the partition plate divides the oil chamber into an oil intake chamber and an oil discharge chamber; one end of the piston cylinder extends into the housing groove. This embodiment conveniently realizes the arrangement of the oil intake chamber and the oil discharge chamber on the outer housing.

Abstract: An electromagnetic-wave radiation system includes: a first metal substrate; a second metal substrate, opposite to the first metal substrate; an electromagnetic wave transmission component, between the first metal substrate and the second metal substrate; where the electromagnetic wave transmission component includes a first glass substrate and a second glass substrate arranged opposite to each other, a liquid crystal layer between the first glass substrate and the second glass substrate, and a plurality of electromagnetic wave transmission structures on a side of that first glass substrate facing the liquid crystal layer; the first glass substrate is close to the first metal substrate; and an electromagnetic shielding structure, between the electromagnetic wave transmission component and the first metal substrate.

Abstract: A data transmission method includes an optical network terminal (ONT) that receives a first data packet. The ONT matches first information about the first data packet with a locally or remotely stored first information base, where a service corresponding to the first information in the first information base is in a preconfigured service set. When the first information base does not include the first information about the first data packet, the ONT sends, through a first path, the first data packet to a first server corresponding to a first service, and when the ONT determines that the first service is in the preconfigured service set, the ONT adds the first information about the first data packet to the first information base.

Abstract: Provided is a dual-polarized antenna.

Abstract: The present invention provides a porous carbon catalyst loaded with metal sulfides based on high-sulfur petroleum coke and preparation method therefor and application thereof. The method includes the steps of preparing an in-situ activated precursor from a pre-treated high-sulfur petroleum coke, destabilizing bulk sulfur, conducting an in-situ metal-sulfur bonding reaction, and washing and drying, which achieve the high-value in-situ conversion of sulfur in high-sulfur petroleum coke, resulting in the preparation of a porous carbon catalyst loaded with metal sulfides based on high-sulfur petroleum coke. This catalyst is applied to catalyze magnesium-based hydrogen storage materials.