Abstract: This application discloses a content excerption method and a device, and relates to the field of terminal technologies, to provide a user with more convenient and efficient content excerption experience. In this application, an electronic device can predetermine an excerption intention of the user based on an operation used to represent an intention of the user to excerpt content on an interface, so that an interface region can be recognized and content in the interface region can be recognized and obtained in advance.

Abstract: A battery cell interconnection component includes a multi-layer structure and two holders. The multi-layer structure includes a plurality of metal strips in a stack arrangement. A gap is formed between any two immediately adjacent metal strips. The two holders fixedly clamp two ends of the multi-layer structure, and each of the two holders is configured to be electrically connected to an electrode of a battery cell.

Abstract: A battery pack includes a housing, a plurality of battery cells and a liquid filling device. The battery cells are disposed in the housing, and each of the battery cells includes two electrodes. The housing has a side opening. A lower edge of the side opening is positioned below the electrodes in a vertical direction. The liquid filling device is connected to the housing and is configured to fill a cooling liquid into the housing. The side opening of the housing is configured to allow excessive cooling liquid to be discharged out of the housing.

Abstract: An energy storage cabinet includes a frame supporting multiple battery packs and a cooling device. The frame includes a support with a pipe and a partition dividing an internal fluid passage of the pipe into a first flow channel and a second flow channel. Each battery pack has a first vent and a second vent. The second vent of a first battery pack is in communication with the second flow channel. The first vent of a second battery pack is in communication with the first flow channel. The cooling device produces a cool air entering the first vent of the first battery pack and the first flow channel. As the cool air passes through the first battery pack, the cool air is heated and becomes a warm air, which is then discharged into the second flow channel through the second vent.

Abstract: A method includes: displaying a first interface including a first application interface and a second application interface that are displayed in a split-screen manner; receiving a first annotation operation performed by a user on the first interface; displaying a first annotation on the first interface in response to the first annotation operation; receiving a first scrolling operation performed by the user on the first interface; displaying a second interface including the first application interface and the second application interface that are displayed in the split-screen manner; receiving a second annotation operation performed by the user on the second interface; displaying a second annotation on the second interface in response to the second annotation operation; and generating a first annotation picture, where the first annotation picture includes the first annotation, the second annotation, the first interface, and the second interface.

Abstract: An electronic device and a performance optimization method thereof are provided. The electronic device includes a battery module, a processor, and a controller. The battery module is configured to supply power to the electronic device. The processor has a power limit. The controller is configured to monitor a charging and discharging current of the battery module. In a power connection mode, the controller analyzes a status of the battery module and adjusts the power limit of the processor according to the charging and discharging current.

Abstract: A battery module includes battery cells, a housing and a temperature-sensing line. The housing includes a base and a cover. A hollow portion is defined when the base is combined with the cover. The battery cells are fixed by the base and the cover, and a part of the outer periphery of each of the plurality of battery cells is exposed from the hollow portion. The temperature-sensing line includes two conductive wires and an insulating layer disposed between the conductive wires. The temperature-sensing line contacts the outer periphery of each of the battery cells exposed from the hollow portion. When the temperature of any battery cell is increased to a predetermined temperature and heat is transmitted to the temperature-sensing line, the insulating layer is melted at the predetermined temperature to make the conductive wires conduct with each other and generate a warning signal.

Abstract: A motor control apparatus receives a DC power source through a DC terminal and is coupled to a motor. The motor control apparatus includes a brake, an inverter, and a controller. The brake is coupled to the inverter. The brake includes an energy-consuming component and a switch component. The controller controls the inverter to convert the DC power source to drive the motor. When the controller determines that the DC power source is interrupted, the controller stops controlling the inverter, and the switch component is self-driven turned on so that a back electromotive force generated by the motor is consumed through the energy-consuming component.

Abstract: The present disclosure relates to the field of additive manufacturing and superalloys, particularly to a method for eliminating cracks in René 104 nickel-based superalloy prepared by laser additive manufacturing. For solving the problem that cracks are easily generated during laser additive manufacturing of René 104 nickel-based superalloy with high content of Al and Ti (Al+Ti>5 wt. %), generation of large-size cracks inside a fabricated part is suppressed by means of designing laser forming parameters and a partition scanning strategy; then stress relief annealing is performed to completely eliminate residual stress inside the fabricated part; and a spark plasma sintering process is performed to eliminate cracks inside the fabricated part and suppress the growth of grains during the sintering process.

Abstract: The electronic device includes an audio module, an external audio processing module, a local audio processing module, a switching module, and a setting module. The external audio processing module processes an external audio signal transmitted via a communication channel. The local audio processing module processes a local audio signal. The switching module is connected between the audio module, and the external audio processing module and the local audio processing module. In the first state, the audio module and the external audio processing module are connected. In the second state, the audio module, and the local audio processing module are connected. The setting module is connected to the switching module. The setting module sets the switching module to switch the electronic device to the first state or the second state in response to an input signal.

Abstract: A motor control apparatus receives a DC power source through a DC terminal and is coupled to a motor. The motor control apparatus includes a brake, an inverter, and a controller. The brake is coupled to the inverter. The brake includes an energy-consuming component and a switch component. The controller controls the inverter to convert the DC power source to drive the motor. When the controller determines that the DC power source is interrupted, the controller stops controlling the inverter, and the switch component is self-driven turned on so that a back electromotive force generated by the motor is consumed through the energy-consuming component.

Abstract: A computer device and a multi-computer system are provided. The computer device includes a central processing unit (CPU), a wireless connection circuit, and a switch circuit. The CPU is coupled to a display to provide an enabling display signal to the display according to a hot plug detection signal provided from the display. The wireless connection circuit receives one of a wireless connection signal and a wireless disconnection signal from a wireless input device. The switch circuit is coupled between the display and the CPU and coupled to the wireless connection circuit. The switch circuit provides the hot plug detection signal to the CPU when the wireless connection circuit receives the wireless connection signal, and masks the hot plug detection signal from the CPU when the wireless connection circuit receives the wireless disconnection signal.

Abstract: An electronic device and a performance optimization method thereof are provided. The electronic device includes a battery module, a processor, and a controller. The battery module is configured to supply power to the electronic device. The processor has a power limit. The controller is configured to monitor a charging and discharging current of the battery module. In a power connection mode, the controller analyzes a status of the battery module and adjusts the power limit of the processor according to the charging and discharging current.

Abstract: A motor control apparatus receives a DC power source through a DC terminal and is coupled to a motor. The motor control apparatus includes a brake, an inverter, and a controller. The brake is coupled to the inverter. The brake includes an energy-consuming component and a switch component. The controller controls the inverter to convert the DC power source to drive the motor. When the controller determines that the DC power source is interrupted, the controller stops controlling the inverter, and the switch component is self-driven turned on so that a back electromotive force generated by the motor is consumed through the energy-consuming component.

Abstract: A characterization method of an oxide dispersion-strengthened (ODS) iron-based alloy powder is provided. The characterization method comprises separating the strengthening phases from the powder matrix through electrolysis, and analyzing and characterizing the strengthening phases using an electron microscope.

Abstract: A multi-scale and multi-phase dispersion strengthened iron-based alloy, and preparation and characterization methods thereof are provided. The alloy contains a matrix and a strengthening phase. The strengthening phase includes at least two types of the strengthening phase particles with different sizes. A volume of the two types of the strengthening phase particles with different sizes having a particle size less than or equal to 50 nm accounts for 85-95% of a total volume of all the strengthening phase particles. The matrix is a Fe—Cr—W—Ti alloy. The strengthening phases include crystalline Y2O3 phase, Y—Ti—O phase, Y—Cr—O phase, and Y—W—O phase. The characterization method comprises electrolytically separating the strengthening phases in the alloy, and then characterizing by using an electron microscope. The tensile strength of the prepared alloy is more than 1600 MPa at room temperature, and is more than 600 MPa at 700° C.

Abstract: The present application provides a display panel, a manufacturing method, a detection method, and a display device. The display panel includes a display area and a non-display area surrounding the display area. The non-display area includes: a crack detection line surrounding the display area; a screen control line; a plurality of switch signal lines; and a plurality of detection switches electrically connected at different positions to the crack detection line. Each detection switch is also connected to the screen control line and a respective switch signal line, and allows conduction between the crack detection line and the screen control line based on the switch signal input by the switch signal line, such that the screen control line drives the display panel to display according to the test signal input by the crack detection line.

Abstract: An oxide dispersion-strengthened (ODS) iron-based alloy powder and a characterization method thereof are provided. The alloy powder comprises a matrix and strengthening phases. The strengthening phases include at least two types of strengthening phase particles with different sizes, wherein a volume of the particles with a particle size of less than or equal to 50 nm accounts for 85-95% of a total volume of all the strengthening phase particles. The matrix is a Fe—Cr—W—Ti alloy. The characterization method of the ODS iron-based alloy powder comprises separating the strengthening phases from the powder matrix through electrolysis, and analyzing and characterizing the strengthening phases using an electron microscope.

Abstract: An air-path structure of a pneumatic nail gun includes a main chamber formed in a gun body, a piston driving chamber and a timekeeping chamber that continuously releases pressurized air to the outside. The gun body is equipped with a trigger valve and a bar valve, and a security chamber and an auxiliary chamber are formed in the trigger valve; the trigger valve controls the pressurized air in the piston driving chamber to be discharged to the outside; and the bar valve controls the pressurized air in the main chamber to go into the piston driving chamber, the timekeeping chamber and the auxiliary chamber. The security chamber is permanently connected to the main chamber for concentrating upon the pressurized air, and the bar valve controls the pressurized air in the main chamber to be discharged into the timekeeping chamber, so as to improve the safety of pneumatic nail gun when used.

Abstract: A computer device and a multi-computer system are provided. The computer device includes a central processing unit (CPU), a wireless connection circuit, and a switch circuit. The CPU is coupled to a display to provide an enabling display signal to the display according to a hot plug detection signal provided from the display. The wireless connection circuit receives one of a wireless connection signal and a wireless disconnection signal from a wireless input device. The switch circuit is coupled between the display and the CPU and coupled to the wireless connection circuit. The switch circuit provides the hot plug detection signal to the CPU when the wireless connection circuit receives the wireless connection signal, and masks the hot plug detection signal from the CPU when the wireless connection circuit receives the wireless disconnection signal.