Abstract: A power equipment and an assembling method thereof are disclosed. The power equipment includes an installation cabinet, a plurality of power modules and at least one expansion power module. The installation cabinet includes a top and two lateral sides. The plurality of power modules are electrically connected to the installation cabinet and arranged in an array on the top of the installation cabinet. The plurality of power modules and the installation cabinet are assembled as one main body. The main body and the expansion power module are transported to an installation site, respectively. The at least one expansion power module is detachably disposed on one of the two lateral sides of the installation cabinet and electrically connected to the installation cabinet through the expansion cables reserved in the installation cabinet.

Abstract: A method of preparing a silicon-on-insulator structure includes forming an epitaxial silicon layer on a front surface of a single crystal silicon donor substrate, forming a dielectric layer on the epitaxial silicon layer to thereby form an epitaxial donor structure including the single crystal silicon donor substrate, the epitaxial silicon layer, and the dielectric layer, bonding the dielectric layer of the epitaxial donor structure to a front surface of a handle structure, the handle structure including a single crystal semiconductor handle substrate, to thereby form a bonded structure including the handle structure, the dielectric layer, the epitaxial silicon layer, and the single crystal silicon donor substrate, and removing the single crystal silicon donor substrate and a portion of the epitaxial silicon layer from the bonded structure to thereby form the silicon-on-insulator structure including the handle structure, the dielectric layer, and a silicon device layer.

Abstract: The invention relates to RO water purifier (100) with provision for dispensing hot or cold water. The device has a user-interface through which a user can choose how hot the purified water should be. The RO water purifier (100) comprises a compartment (9) for storage of pre-heated or pre-cooled purified water. The compartment comprises an inlet for return of any undispensed purified hot, cold, or ambient water to flow back from the user-interface. The compartment has an outlet for pre-heated or pre-cooled purified water to flow out into a device (8) for heating or cooling it further as desired by the user. The device for heating or cooling the purified ambient water is configured to heat the water to 80 to 95° C. or alternatively, is configured to cool it to 15 to 5° C., and wherein in said e compartment said pre-heated water is stored at 40 to 75° C. and when it is pre, cooled it is stored at 10 to 20° C., and wherein temperature of said purified ambient water is 25 to 40° C.

Abstract: A device for providing a liquid helium forced flow cooling fluid is provided, including a liquid helium vessel system for heat load, a liquid helium vessel system for circulation pump, a liquid helium vessel system for subcooled helium, and a cold box. The liquid helium vessel system for heat load absorbs the heat load of a cryogenic user; the liquid helium vessel system for circulation pump absorbs the heat load of a circulation pump; the liquid helium vessel system for subcooled helium absorbs the heat load of subcooled helium; the device process pipelines and the cold box achieve a pre-cooling process of a cryogenic user, a pre-cooling and liquid storage process of liquid helium vessels, and a pre-cooling and starting-up process of rotating machines, and provide the liquid helium forced flow cooling fluid to accomplish the operations of a cryogenic user.

Abstract: A hand-held wireless electric sprayer includes a shell formed by assembling an upper shell and a lower shell, a pump and a battery installed inside the shell, a switch mechanism for controlling the pump to be turned on and off, a liquid inlet pipe communicated with the pump and extending to the outside of the shell, and a spray nozzle communicated with the pump, wherein an outer end of the spray nozzle is provided with a nozzle, the lower shell is provided with a chute integrally formed inward, and an inner end of the spray nozzle is fixedly connected with a slide block; the slide block slides in the chute to realize the length adjustment of the nozzle, the nozzle is connected with the pump by a connecting pipe, an inner wall of the chute is provided with ribs, and the limiting effect of the ribs and the slide block enables the nozzle to stay at a set position; a length of the nozzle extending out of the shell can be adjusted, and the nozzle can reach a stable state by the action of the ribs, which is conveni