Abstract: A method and a system for determining a supporting structure by combining a stress environment and an underground surrounding rock structure are provided in the disclosure, which relates to the technical field of stability analysis of coal-mine rock mass. The method includes: defining a stress peak position and an in-situ stress position by determining the stress environment; identifying the underground surrounding rock structure, identifying lithology and constructing a three-dimensional model of a rock stratum to analyze damage degree of the rock stratum; pretreating, namely normalizing, the damage degree of the rock stratum at two sides and comparing the damage degree of the rock stratum at a roof and the floor; and identifying the supporting structure and determining supporting effectiveness and a supporting length. The method of the disclosure is different from related art, and ensures that the supporting structure meets mechanical foundation and practical engineering requirements as a whole.

Abstract: A power supply device with dual power source planes and a server. The device includes: a plurality of controllers connected in parallel; a first Power Supply Unit (PSU) power source group and a second PSU power source group each includes two PSU power sources connected in parallel, and the first PSU power source group and the second PSU power source group are respectively located on two independent power source planes; and a power source backboard, wherein the power source backboard includes a first copper skin layer and a second copper skin layer, which are not connected with each other, the first PSU power source group is connected to the input end of each controller by means of the first copper skin layer, and the second PSU power source group is connected to the input end of each controller by means of the second copper skin layer.

Abstract: The present application provides an evaporator, including a heat exchange tube set and a distribution device. The heat exchange tube set includes a plurality of heat exchange tubes. The distribution device is provided on one end of the length direction of the heat exchange tube set such that the distribution device can distribute a refrigerant through heat exchange tube inlets at the end portions of the plurality of heat exchange tubes. The distribution device includes a distribution device housing, at least one receiving port, and at least one distribution member. The receiving port is provided on the distribution device housing, and the distribution member is provided in the distribution device housing. The distribution device housing is disposed around the heat exchange tube inlets at the end portions of the heat exchange tube set and seals the heat exchange tube inlets. The distribution member can receive the refrigerant through the receiving port.

Abstract: A support frame and a laundry processing device are provided. The support frame includes a base, and a vertical beam extending upwards from the base. Vertical beams are provided, and at least part of the vertical beams are formed by detachably connecting at least two sub-units.

Abstract: A double-robot system for detecting a flaw of a rim or a spoke includes a movable cart, a lifting platform, a lifting rotating mechanism, and robots. The lifting platform is movably connected to the movable cart in a vertical direction. The lifting rotating mechanism is disposed on the lifting platform. A wheel lifting arm is disposed on each of the left side and the right side of the lifting rotating mechanism. The wheel lifting arms are used for lap joint on a rail where a wheel in detection is located. One robot is fixedly connected to each of the front side and the rear side of the lifting rotating mechanism. Each robot is provided with a tread carrier. The lifting rotating mechanism is also provided with two inner carriers.

Abstract: A wireless communication device includes a first circuit including a baseband circuit and a radio circuit, and at least one frontend module (FEM) remote from the first circuit and placed in close proximity to and coupled to at least one radio-frequency (RF) antenna. The FEM is coupled to the first circuit via interface circuitry. An FEM comprises a frontend (FE) circuit including one or more low-noise amplifiers (LNAs), one or more power amplifiers (PAs), and at least one of a multi-pole switch and a multiplexer. The multi-pole switch and the multiplexer being implemented on a first side of the FEM coupled to the interface circuitry. The interface circuitry includes at least some of filters, splitters, multi-pole switches, and multiplexers to reduce a count of interconnect routes to the at least one FEM.

Abstract: A double-robot system for detecting a flaw of a rim or a spoke includes a movable cart, a lifting platform, a lifting rotating mechanism, and robots. The lifting platform is movably connected to the movable cart in a vertical direction. The lifting rotating mechanism is disposed on the lifting platform. A wheel lifting arm is disposed on each of the left side and the right side of the lifting rotating mechanism. The wheel lifting arms are used for lap joint on a rail where a wheel in detection is located. One robot is fixedly connected to each of the front side and the rear side of the lifting rotating mechanism. Each robot is provided with a tread carrier. The lifting rotating mechanism is also provided with two inner carriers.

Abstract: A method for preparing titanium or titanium aluminum alloys through two-stage aluminothermic reduction and obtaining titanium-free cryolite as byproducts.

Abstract: A wireless communication device includes a first circuit including a baseband circuit and a radio circuit, and at least one frontend module (FEM) remote from the first circuit and placed in close proximity to and coupled to at least one radio-frequency (RF) antenna. The FEM is coupled to the first circuit via interface circuitry. An FEM comprises a frontend (FE) circuit including one or more low-noise amplifiers (LNAs), one or more power amplifiers (PAs), and at least one of a multi-pole switch and a multiplexer. The multi-pole switch and the multiplexer being implemented on a first side of the FEM coupled to the interface circuitry. The interface circuitry includes at least some of filters, splitters, multi-pole switches, and multiplexers to reduce a count of interconnect routes to the at least one FEM.