Abstract: An assembly storage rack, which comprises two sets of vertically arranged upright rods, at least two storage baskets are arranged between the upright rods, and adjustment blocks are arranged on each of the upright rods, the adjustment blocks and the upright rods are relatively fixed and pre-installed as the integral modular components, the storage baskets are detachably connected to the adjustment blocks on the upright rods on both sides; the storage basket comprises a first storage basket and a second storage basket arranged vertically in sequence, the first storage basket can be placed in the second storage basket; first adjustment blocks are arranged between the first storage basket and the upright rods.

Abstract: An assembly storage rack, which comprises two sets of vertically arranged upright rods, at least two storage baskets are arranged between the upright rods, and adjustment blocks are arranged on each of the upright rods, the adjustment blocks and the upright rods are relatively fixed and pre-installed as the integral modular components, the storage baskets are detachably connected to the adjustment blocks on the upright rods on both sides; the storage basket comprises a first storage basket and a second storage basket arranged vertically in sequence, the first storage basket can be placed in the second storage basket; first adjustment blocks are arranged between the first storage basket and the upright rods.

Abstract: This application relates to the technical field of coal-fired boilers, and provides a method and an apparatus for improving steam oxidation resistance of a small-diameter boiler tube in a coal-fired boiler. The method includes the following steps: cutting a boiler tube panel from a ceiling of the boiler, vertically hoisting and fixing the boiler tube panel, and cutting out a section from a bottom portion of a lower bend of the boiler tube panel; cleaning an inner tube wall of each tube body in the boiler tube panel; performing oxidation resistance coating sintering on the inner tube wall of each tube body in the boiler tube panel; and performing a welding repair on each tube body in a sintered boiler tube panel. All construction processes of this method can be completed in a furnace during shutdown and maintenance, production efficiency is high, and maintenance duration can be significantly reduced.

Abstract: A connection establishment method, applied to a first electronic device, includes: establishing a first wireless communication connection with at least one other electronic device identified based on a first search; determining at least one candidate electronic device from the at least one other electronic device based on the first wireless communication connection; displaying first identification information of the at least one candidate electronic device on an interface of the first electronic device; and establishing a second wireless communication connection with at least one target electronic device based on detecting a preset operation of a user and second identification information of the at least one target electronic device, wherein the at least one target electronic device includes one or more of the at least one candidate electronic device.

Abstract: A switch circuit, a mixer, and an electronic device, where the switch circuit includes a first metal oxide semiconductor (MOS) transistor, a second MOS transistor, a third MOS transistor, and a fourth MOS transistor, both a gate of the first MOS transistor and a gate of the fourth MOS transistor are connected to a first port, and both a gate of the second MOS transistor and a gate of the third MOS transistor are connected to a second port; and a lead between the gate of the first MOS transistor and the first port, a lead between the gate of the second MOS transistor and the second port, a lead between the gate of the third MOS transistor and the second port, and a lead between the gate of the fourth MOS transistor and the first port all have an equal length. In this way, linearity is relatively high.

Abstract: A switch circuit, a mixer, and an electronic device, where the switch circuit includes a first metal oxide semiconductor (MOS) transistor, a second MOS transistor, a third MOS transistor, and a fourth MOS transistor, both a gate of the first MOS transistor and a gate of the fourth MOS transistor are connected to a first port, and both a gate of the second MOS transistor and a gate of the third MOS transistor are connected to a second port; and a lead between the gate of the first MOS transistor and the first port, a lead between the gate of the second MOS transistor and the second port, a lead between the gate of the third MOS transistor and the second port, and a lead between the gate of the fourth MOS transistor and the first port all have an equal length. In this way, linearity is relatively high.

Abstract: A charging system includes a plurality of mobile power supplies, a plurality of charging units, and a control device. The charging unit includes a fixing device and a charging device, the fixing device being changeable between a locked state where one of the mobile power supplies can be locked in the charging unit by the fixing device and an unlocked state where the one of the mobile power supplies is unlocked from the charging unit. The charging device is configured to charge the mobile power supply fixed in the charging unit. The control device is connected to the charging units, the control device is configured to receive a charging request from a user and generate an unlock command in response to the charging request to control at least one of the fixing devices to switch to the unlocked state.

Abstract: The present disclosure includes a protective sleeve assembly and a battery module, wherein the protective sleeve assembly includes a frame and a terminal fixing plate, a terminal circuit board and a connector port are arranged on the terminal fixing plate, an end of a conduction sheet is connected to the terminal circuit board, the other end of the conduction sheet is in a limiting hole of the terminal fixing plate; the battery module includes a upper cover, a lower cover and a charge-discharge control circuit board, a conduction electrode is arranged on the charge-discharge control circuit board and connected with a battery. When the mobile phone is fixed with the protective sleeve assembly, a special port of the mobile phone is transformed into a general port by the conversion circuit of the terminal circuit board, so it's easy to charge the mobile phone by the general port.

Abstract: The present disclosure includes a protective sleeve assembly and a battery module, wherein the protective sleeve assembly includes a frame and a terminal fixing plate, a terminal circuit board and a connector port are arranged on the terminal fixing plate, an end of a conduction sheet is connected to the terminal circuit board, the other end of the conduction sheet is in a limiting hole of the terminal fixing plate; the battery module includes a upper cover, a lower cover and a charge-discharge control circuit board, a conduction electrode is arranged on the charge-discharge control circuit board and connected with a battery. When the mobile phone is fixed with the protective sleeve assembly, a special port of the mobile phone is transformed into a general port by the conversion circuit of the terminal circuit board, so it's easy to charge the mobile phone by the general port.