Abstract: An electric vehicle (1), comprising a battery pack (10) and a locking mechanism (40), wherein the locking mechanism (40) is mounted on the electric vehicle (1) and is configured to lock the battery pack (10); and an unlocking mechanism (20) is provided in the battery pack (10), and the unlocking mechanism (20) is configured to unlock the locking mechanism (40) under an external driving force. The unlocking mechanism is arranged in the battery pack and is configured to unlock the locking mechanism under the external driving force. Compared with a method whereby a locking mechanism is directly unlocked by means of an external driving mechanism, an unlocking distance stroke can be shortened, so that not only can the unlocking efficiency be increased, but the alignment precision of the unlocking mechanism on the locking mechanism during unlocking can also be improved, thereby enhancing the unlocking reliability.

Abstract: Provided are a method and system for controlling interactive live streaming co-hosting, a device, and a medium. The method includes acquiring a first interactive image and receiving a mirror interactive image of a second terminal by a first terminal, where the first terminal and the second terminal are in a live streaming co-hosting state, and the mirror interactive image of the second terminal is obtained by performing mirror processing on a second interactive image of the second terminal; and combining the first interactive image and the mirror interactive image by the first terminal to obtain a target interactive image.

Abstract: A large-scale tool hoisting device for offshore electric power construction is provided. A steel cable retracted to winches is dried using the heat in the operating cabin, thereby preventing the steel cable from being in a wet state for a long time and being corroded by seawater. For different loads at the terminal of the steel cable, a transmission ratio between a drive wheel and a control wheel is changed through the sliding of the drive wheel. Without changing the rotational speed of the drive motor, the moving speed of the steel cable is effectively and correspondingly improved by reducing the pulling force of the steel cable, or a large pulling force can be provided for the steel cable by reducing the moving speed of the steel cable. The transmission ratio can be changed in the hoisting process.

Abstract: The present invention provides novel compounds having the general formula: wherein ring A, ring B, ring C, bond a, and R1 to R7 are as described herein, or a pharmaceutically acceptable salt thereof, compositions including the compounds and methods of using the compounds.

Abstract: The intelligent and efficient fire extinguishing device mainly comprises an intelligent sensing system, a power-driven system, an intelligent control system, a foam system, a fixation system, a support lifting system and a protection system. The intelligent sensing system is used to measure the ambient wind direction and the internal flow field of the tank to determine the fire extinguishing location. The intelligent control system controls the power-driven system to reach the designated location based on the intelligent sensing system. The foam system is used to spray foam. The fixation system is used to fix the device. The support lifting system is used to lift or rotate the cooling nozzle and fire-fighting water cannon. The protection system is used to protect the device. The movement, positioning and extinguishing of the fire extinguishing device are unitedly controlled by the intelligent control system. The invention can achieve intelligent fire extinguishment in storage tanks.

Abstract: Disclosed in the present disclosure is a metal structural member used in cooperation with a gallium-based liquid metal. A high phosphorus nickel alloy layer is arranged on a surface of the metal structural member in contact with the gallium-based liquid metal. The metal structural member does not react with the gallium-based liquid metal when it is in contact with the gallium-based liquid metal, thereby avoiding a degradation of heat dissipation performance due to consumption of the gallium-based liquid metal. Further disclosed in the present disclosure are a manufacturing method for the metal structural member, and an application of the metal structural member in heat dissipation of computer chips, cell phone chips, communication products, high power LEDs, insulated gate bipolar transistors, and high power electronic products.

Abstract: An ultrahigh-temperature wind tunnel erosion testing system is provided, including a fuel system (1), an erosion system (2), an erosion spray gun (3), a test piece fixture (5) and a testing device; the erosion spray gun (3) is connected with the fuel system (1) and the erosion system (2) respectively; the erosion spray gun (3) is arranged on a lifting and rotating mechanism (4); the test piece fixture (5) is arranged on one side of the lifting and rotating mechanism (4) and is opposite to a nozzle of the erosion spray gun (3); and the testing device is connected with the test piece fixture (5). The plurality of groups of test pieces are circlewise arranged around the lifting and rotating mechanism (4).

Abstract: The present utility model is a mouthpiece of a wind instrument, an electric harmonica, an electric blowpipe, and a wind instrument. The mouthpiece for a wind instrument comprises air chambers, disposed in the housing of the wind instrument; air pressure sensors, disposed at the bottom of the air chambers for detecting air pressure changes within the air chambers; an air intake channel, disposed on the outer side of the air chambers, and when air is blown into the air intake channel. The air chambers produce pressure changes which are detected by the air pressure sensors. Air vents, disposed on the air intake channel, are configured for airflow to enter the air intake channel and be discharged from the air vents, and the path thereof changes. Such a configuration can improve user comfort, reduce poor hygiene within the instrument, and reduce the chances of inadvertent sound output.

Abstract: The present disclosure relates to a scale shifting and volume adjustment method, apparatus and device, the method comprising obtaining air pressure difference; selecting a scale to be played corresponding to the air pressure difference according to a preset scale selection strategy; obtaining a volume value corresponding to the air pressure difference according to a preset volume acquisition strategy; adjusting the volume of the notes of the scale based on the volume value. The present disclosure is capable of automatically shifting scale according to the air pressure difference, and adjusting the volume in a convenient and hassle-free manner.

Abstract: Provided in the present disclosure is a liquid metal substrate cleaning method and cleaning and coating integrated device, belonging to the technical field of thermal interface materials construction. The above-mentioned method includes a substrate cleaning and a cleaning qualification inspection, wherein the substrate cleaning comprises a plasma cleaning, an inorganic cleaning reagent cleaning, and an organic reagent cleaning, and any combination of the plasma cleaning, the inorganic cleaning reagent cleaning and the organic reagent cleaning; and the cleaning qualification inspection is judged as qualified or not based on a diffusion area of the organic reagent on a surface of the liquid metal substrate, and when the diffusion area meets a predetermined requirement, the cleaning is finished; and when the diffusion area does not meet the predetermined requirement, the substrate cleaning step is repeated, and the steps are repeated in this way until the diffusion area meets the predetermined requirement.

Abstract: The application provides a method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma, including: using a mixture of hydrogen rich gas and argon gas to generate hydrogen plasma for denitrification of molten steel during at least one of arc furnace smelting, ladle refining, VOD refining, and RH refining. The method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma provided in the application can effectively remove nitrogen from the molten steel by spraying a mixture of argon gas and hydrogen rich gas into the molten steel through a hollow electrode and plasma torch, reducing electrode consumption and electricity consumption per ton steel, and also reducing arc radiation heat loss, improving heating rate, thereby shortening smelting time and reducing production costs.

Abstract: A large-scale tool hoisting device for offshore electric power construction is provided. A steel cable retracted to winches is dried using the heat in the operating cabin, thereby preventing the steel cable from being in a wet state for a long time and being corroded by seawater. For different loads at the terminal of the steel cable, a transmission ratio between a drive wheel and a control wheel is changed through the sliding of the drive wheel. Without changing the rotational speed of the drive motor, the moving speed of the steel cable is effectively and correspondingly improved by reducing the pulling force of the steel cable, or a large pulling force can be provided for the steel cable by reducing the moving speed of the steel cable. The transmission ratio can be changed in the hoisting process.

Abstract: An online centrifugal system includes a conveying device, a balancing and weighing mechanism, a manipulator, and a centrifuge. The conveying device, the balancing and weighing mechanism and the centrifuge are sequentially arranged. The conveying device is used to convey a sample holder for holding blood collection tubes, the balancing and weighing mechanism is used to weigh an adapter, and the centrifuge is used to perform centrifugation to blood collection tubes. The manipulator is used to grab the blood collection tubes and the adapter respectively, to convey the blood collection tubes between the adapter and the conveying device, and convey the adapter between the centrifuge and the balancing and weighing mechanism. An inlet and outlet window is provided on the centrifuge for passage of the adapter. The balancing and weighing mechanism is used to balance the adapter, thereby meeting balancing needs of the adapter.

Abstract: A ripple detection device and a ripple suppression device. The ripple detection device includes: a ripple sampling unit, at least two DC sampling units, and a digital signal processing unit; the ripple sampling unit outputs a first voltage signal at an output port of a non-isolated DC/DC bidirectional energy conversion unit to the digital signal processing unit; the DC sampling unit outputs a first DC signal in a second voltage signal at a connected port of the non-isolated DC/DC bidirectional energy conversion unit to the digital signal processing unit and blocks an AC signal in the second voltage signal to be output to the digital signal processing unit; the digital signal processing unit determines a ripple noise signal at the output port of the non-isolated DC/DC bidirectional energy conversion unit according to the first voltage signal and the first DC signal.

Abstract: The disclosure discloses a liquid metal packaging structure for chip heat dissipation, comprising: a fixing frame and a sealing frame, wherein a chip is provided in the inner frame of the sealing frame, and a heat sink is provided on side of the sealing frame away from the electronic component, and the heat sink is hermetically covered on an end surface of the sealing frame, the sealing frame is filled with liquid metal, and the heat sink is integrally molded with a pressing block at a position corresponding to the inner frame of the sealing frame, and the liquid metal is arranged between the chip and the pressing block. According to the liquid metal packaging structure for chip heat dissipation, the sealing frame is fixed by the fixing frame, and the sealing frame is filled with liquid metal.

Abstract: Disclosed are a testing system and testing method for a magnetic refrigerator. In the system, an adjustable load includes a heating container, and a flow direction control structure. The heating container is provided with an inlet, an outlet, and a heater with controllable heating power. The flow direction control structure is configured to enable a heat exchange fluid flowing out from a cold end of any magnetic regenerator module in magnetic regenerator modules arranged in pairs to flow into a cold end of another magnetic regenerator module through the inlet and outlet of the heating container in sequence, the heater is used to heat the heat exchange fluid inside the heating container, and an on-off state between the adjustable load and the cold end of any magnetic regenerator module is controllable.

Abstract: Provided is a lock mechanism, wherein the lock mechanism includes a lock base, the lock base is provided with an opening and a cavity extending from the opening, the opening is used for the lock shaft mounted to the battery pack to enter the cavity, the lock mechanism further includes: a lock assembly, the lock assembly is connected to one side of the lock base opposite the lock shaft, the lock assembly is moveable relative to the lock base, and the side of the lock base opposite the lock shaft extends into the cavity or exits the cavity; wherein, the lock assembly is capable of preventing the lock shaft from exiting the cavity from the opening when the lock assembly extends into the cavity; the lock assembly is capable of allowing the lock shaft to exit the cavity from the opening when the lock assembly exits the cavity.

Abstract: A vehicle includes an engine and a transmission coupled to the engine. A vehicle controller is programmed to, in response to a shift of the transmission with the vehicle being in a sport mode or other precondition being present, command the engine to skip one or more fuel injector events of the engine during an inertia phase of the shift.