Abstract: Provided are a communication method and apparatus for an external device, allocating an IP address to the external device to access the base station, wherein the external device is connected to the base station through an Ethernet interface of a destination device; searching corresponding relations between internal IP addresses and Ethernet interfaces for the Ethernet interface corresponding to the allocated internal IP address; determining destination device information corresponding to the destination device to which the found Ethernet interface belongs; searching model data of all external devices for model data comprising the destination device information, and establishing a corresponding relation between the found model data and the allocated internal IP address, wherein the model data is configured to identify the external device; and communicating with the external device identified by the model data through the internal IP address corresponding to the model data.

Abstract: The present disclosure discloses a cage with an adjustable height with posterior bone grafting, comprising: a main body, a blade assembly fitted to the main body, and a pushing assembly fitted to the blade assembly, wherein an end cover is interference-fitted on one end face of the main body, the main body comprising a screw section, a side section integrally connected to two ends of the screw section respectively, and an opening section integrally connected to the side section, where a threaded through-hole is provided on the screw section, and an opening through-hole is provided on the opening section, the pushing assembly comprising a first U-shaped base and a threaded rod fixedly connected to the first U-shaped base, wherein the threaded rod passes through the first U-shaped base, and a pin is fixedly connected to an end, close to the threaded rod, of the first U-shaped base.

Abstract: An electric slide rail includes a track system; a power assembly; and a transmission system; wherein the track system includes an upper rail, a middle rail, and a lower rail arranged from top to bottom, the power assembly is fixed to the lower rail, the transmission system is fixed to the middle rail, and the electric slide rail is configured such that the power assembly provides power to move the track system via the transmission system. According to the electric slide rail, the slide rail moves without the need for continuous manual input, a high level of automation is achieved, and user experience is effectively improved.

Abstract: A die steel with a high thermal diffusion coefficient includes 0.30-0.40 wt. % of C, 0.05-0.10 wt. % of Si, 2.50-3.40 wt. % of Mo, 0.01-0.05 wt. % of Nb, 0.30-0.50 wt. % of Co, 0.01-0.05 wt. % of RE, the rest is Fe and unavoidable impurities, wherein in the die steel, P?0.15 wt. %, S?0.025 wt. %. A preparation method of the die steel includes steps of melting, electroslag remelting, electroslag ingot annealing, forging, spheroidizing annealing, quenching and tempering.

Abstract: An electrical energy storage system, a controller, and methods of using the same are provided. The system includes battery packs connected in parallel, one or more battery power management unit, one or more power converters, and a controller. The controller includes one or more processor and at least one tangible, non-transitory machine readable medium encoded with one or more programs configured to perform steps for discharging or charging. The steps include: reading data including state of health (SOH) and state of charge (SOC) from each battery pack, connecting a respective battery pack with a respective power converter; receiving a power command from an energy management system, calculating a respective power rate of each battery pack based on the data of SOH, SOC, and the power command, and discharging power from battery packs to a grid or charging power to battery packs based on the power rate of each battery pack.

Abstract: An electrical energy storage system, a controller, and methods of using the same are provided. The system includes battery packs connected in parallel, one or more battery power management unit, one or more power converters, and a controller. The controller includes one or more processor and at least one tangible, non-transitory machine readable medium encoded with one or more programs configured to perform steps for discharging or charging. The steps include: reading data including state of health (SOH) and state of charge (SOC) from each battery pack, connecting a respective battery pack with a respective power converter; receiving a power command from an energy management system, calculating a respective power rate of each battery pack based on the data of SOH, SOC, and the power command, and discharging power from battery packs to a grid or charging power to battery packs based on the power rate of each battery pack.