Abstract: Embodiments of this application provide an optical component, an optical switching fully-interconnected system, and a communication system, to reduce a backplane loss of an optical signal between the optical component and a switching node. The optical component specifically includes: a service processing module, an optical-to-electrical conversion module, a multiplexer, an optical switching switch, an optical receiving module, and an optical connector. When the optical component serves as a transmitting end, a first electrical signal generated by the service processing module is converted by the optical-to-electrical conversion module to generate a first optical signal, and the first optical signal is multiplexed by using the multiplexer and is output to a next-hop optical component through the optical switching switch and the optical connector.

Abstract: This application provides an optical transmission method and apparatus, and relates to the communication field. A first optical transmission apparatus includes a first circulator and a first receiving module. The first receiving module is connected to the first circulator. The first circulator is configured to receive a second unmodulated optical signal from a second optical transmission apparatus. The first receiving module is configured to receive a second modulated optical signal from the second optical transmission apparatus, and receive the second unmodulated optical signal from the first circulator. The second modulated optical signal is obtained by modulating a first unmodulated optical signal, the second unmodulated optical signal is used to perform coherence detection on the second modulated optical signal, and the third unmodulated optical signal is an optical signal provided by the first optical transmission apparatus to the second optical transmission apparatus.

Abstract: The present invention relates to wheat plants comprising a mutation causing an alteration of the amino acid sequence in centromere histone H3 (CENH3), which have the biological activity of a haploid inducer. Further, the present invention provides methods of generating the wheat plants of the present invention and haploid and doubled haploid wheat plants obtainable by crossing the wheat plants of the present invention with wildtype wheat plants.

Abstract: The present invention relates to wheat plants comprising a mutation causing an alteration of the amino acid sequence in centromere histone H3 (CENH3), which have the biological activity of a haploid inducer. Further, the present invention provides methods of generating the wheat plants of the present invention and haploid and doubled haploid wheat plants obtainable by crossing the wheat plants of the present invention with wildtype wheat plants.

Abstract: This application provides a data transmission method, a radio frequency unit, a baseband unit, and a communication system. The baseband unit includes: a multi-wavelength integrated light source, configured to generate a first optical carrier and a second optical carrier that have different wavelengths; a first modulator, configured to modulate downlink data sent to the first radio frequency unit to the first optical carrier, to obtain a first downlink optical signal; a second modulator, configured to modulate downlink data sent to the second radio frequency unit to the second optical carrier, to obtain a second downlink optical signal; and a multiplexer/demultiplexer, configured to multiplex the first downlink optical signal and the second downlink optical signal into a downlink combined optical signal and send the downlink combined optical signal.

Abstract: A clock synchronization method and a communication apparatus are provided. The method includes: multiplexing a local analog clock signal and a first data signal to obtain a first multiplexed signal; sending the first multiplexed signal to a first apparatus; receiving a second multiplexed signal from the first apparatus; demultiplexing the second multiplexed signal to obtain a second data signal and a first analog clock signal, where the first analog clock signal corresponds to the local analog clock signal after it has gone through a transmission delay; obtaining a first signal based on the first analog clock signal, where the first signal is a delay compensation amount or a second analog clock signal, and the second analog clock signal is obtained by applying delay compensation to the local analog clock signal; and processing data based on the first signal to obtain the first data signal, to which delay compensation has been applied.

Abstract: Disclosed are a method and a device for manufacturing liquid hydrogen by offshore off-grid superconducting wind turbine. The method comprises the following steps: electrolyzing seawater to obtain hydrogen based on electric energy output by an offshore off-grid superconducting wind turbine generator, liquefying the hydrogen into prepared liquid hydrogen, and outputting a part of the liquid hydrogen as the refrigerant of the offshore off-grid superconducting wind turbine generator. The device comprises a liquid preparation platform, an offshore off-grid superconducting wind turbine generator, a seawater electrolysis unit, a hydrogen liquefaction unit and a liquid hydrogen storage unit, wherein the power ends of the seawater electrolysis unit and the hydrogen liquefaction unit are connected with the output end of the offshore off-grid superconducting wind turbine generator, and the hydrogen liquefaction unit is connected with the coolant input end of the offshore off-grid superconducting wind turbine generator.

Abstract: A rod mechanism for a garden tool having a main body includes a first rod pivotally connected to the main body and movable between an in-use position and a storage position. A locking component engages the main body to lock the first rod in one of the in-use position and the storage position. An actuator moves between a released position and a triggered position, the actuator when in the triggered position unlocking the locking component from the main body, the actuator when in the released position orienting the locking component so as to be lockable to the main body. A second rod connected to the first rod moves to a preset position allowing the actuator to move to one of the triggered position or the released position. A position sensor on the main body generates a sensing signal when the first rod pivots to at least one of the in-use position and the storage position.

Abstract: A battery pack includes a main body, and a handle rotatably connected to the main body. The handle is integrally formed by a steel wire. A related garden tool includes a working head, a power driving device for driving the working head to work, and the battery pack.

Abstract: A garden tool includes a connecting rod assembly, a working head, a power source, a first rod connected to the working head, a second rod connected to the power source, and a connection structure for mechanical and electrical connection between the first and second rods. A first terminal is arranged on the first rod and a second terminal arranged on the second rod, the first terminal being connected to a first wire, the second terminal being connected to a second wire, the first terminal and the second terminal connectable to transmit power of the power source to the working head through the first wire and the second wire. A second base is mounted in the second rod, the second base including at least two jacks independent of each other. At least two second terminals are respectively mounted in respective jacks.

Abstract: A handle assembly for a garden tool includes a housing having a gripping portion defining an extension direction, the housing defining a cavity for detachably mounting a battery pack, the battery pack being configured to be inserted into the cavity along the extension direction of the gripping portion. A related garden tool includes a link assembly; a working mechanism arranged at one end of the link assembly; and a power mechanism arranged at the other end of the link assembly. The power mechanism includes a gasoline engine with an electric starting system having a starting motor powered by the battery pack.

Abstract: A telescopic tube device includes a first tube assembly, a second tube assembly slidably connected relative to the first tube assembly, and an operating unit disposed at a sleeved position between the first tube assembly and the second tube assembly. The operating unit includes an operating member, a first locking member, a second locking member, and a limiting member. When in a locked state, the limiting member is at an initial position, and the first locking member and the second locking member remain engaged; when in at least one released state, the limiting member is offset from the initial position, and the first locking member and the second locking member are disengaged. At least one elastic member provides the limiting member with a pulling force so that the limiting member has a tendency to remain at the initial position. A related vacuum cleaner is disclosed.

Abstract: The present invention relates to wheat plants comprising a mutation causing an alteration of the amino acid sequence in centromere histone H3 (CENH3), which have the biological activity of a haploid inducer. Further, the present invention provides methods of generating the wheat plants of the present invention and haploid and doubled haploid wheat plants obtainable by crossing the wheat plants of the present invention with wildtype wheat plants.

Abstract: A garden tool includes a base, a motor arranged on the base, a cutting tool drivingly connected with the motor, a power supply, a main control module electrically connected with the power supply and used for controlling the motor, and a tilt angle detecting module connected with the main control module. The tilt angle detecting module detects a tilt angle between the cutting tool and a horizontal plane. When the tilt angle is greater than a preset value, the tilt angle detecting module sends a shutdown signal to the main control module. The main control module turns off the power supply to stop the electric motor upon receipt of the shutdown signal. A related method of use is disclosed.

Abstract: A telescopic tube device includes a first tube assembly, a second tube assembly slidably connected relative to the first tube assembly, and an operating unit disposed at a sleeved position between the first tube assembly and the second tube assembly. The operating unit includes an operating member, a first locking member, a second locking member, and a limiting member. When in a locked state, the limiting member is at an initial position, and the first locking member and the second locking member remain engaged; when in at least one released state, the limiting member is offset from the initial position, and the first locking member and the second locking member are disengaged. At least one elastic member provides the limiting member with a pulling force so that the limiting member has a tendency to remain at the initial position. A related vacuum cleaner is disclosed.

Abstract: A braze alloy for joining or repairing ceramic matrix composite (CMC) components comprises a braze composition including silicon at a concentration from about 48 at. % to about 66 at. %, titanium at a concentration from about 1 at. % to about 35 at. %, and an additional element selected from aluminum, cobalt, vanadium, nickel, and chromium. The braze composition comprises a melting temperature of less than 1300° C.

Abstract: A handle assembly for a garden tool includes a housing having a gripping portion defining an extension direction, the housing defining a cavity for detachably mounting a battery pack, the battery pack being configured to be inserted into the cavity along the extension direction of the gripping portion. A related garden tool includes a link assembly; a working mechanism arranged at one end of the link assembly; and a power mechanism arranged at the other end of the link assembly. The power mechanism includes a gasoline engine with an electric starting system having a starting motor powered by the battery pack.

Abstract: A garden tool includes a power assembly and a handle assembly. The handle assembly has a start key electrically connected with the power assembly and a cover capable of at least partially shielding the start key. The cover is configured to be moved from a closed position to an opened position under driving of external force so as to operate the start key. A reset member is located between the cover and the handle assembly, the reset member being capable of driving the cover to the closed position.

Abstract: A garden tool includes a connecting rod assembly, a working head, a power source, a first rod connected to the working head, a second rod connected to the power source, and a connection structure for mechanical and electrical connection between the first and second rods. A first terminal is arranged on the first rod and a second terminal arranged on the second rod, the first terminal being connected to a first wire, the second terminal being connected to a second wire, the first terminal and the second terminal connectable to transmit power of the power source to the working head through the first wire and the second wire. A second base is mounted in the second rod, the second base including at least two jacks independent of each other. At least two second terminals are respectively mounted in respective jacks.