Abstract: Embodiments of the present disclosure provide a method for welding cell strings and a series welding machine. The method includes: forming an arrangement of a plurality of solar cells; inspecting the arrangement of the plurality of solar cells; providing a plurality of initial welding strips including first initial welding strips and second initial welding strips, the first initial welding strips interleave with the second initial welding strips in a first direction; cutting each of the first initial welding strips at first cutting positions, and cutting each of the second initial welding strips at second cutting positions, to obtain a plurality of welding strips; moving each welding strip in a second direction to form a set of welding strips; transferring the set of welding strips onto the arrangement of the plurality of solar cells; and welding the plurality of welding strips to corresponding solar cells to form a cell string.

Abstract: The present disclosure discloses a method for preparing a hierarchical porous material for a molecular sieve with an MFI structure. In the present disclosure, porous silicon dioxide is used as a carrier on a surface of which a nano zeolite seed is loaded, and then subjected to treatment with a secondary growth compound fluid and hydrothermal crystallization, so that a nano zeolite molecular sieve membrane is further grown on the surface of the porous silicon dioxide. The specific surface area and pore volume of the hierarchical porous material for the molecular sieve with the MFI structure prepared by the present disclosure are greatly improved compared with those of the original porous silicon dioxide. The material not only has the macroporous structure of the porous silicon dioxide, but also incorporates micropores of the molecular sieve itself and mesopores formed by molecular sieve agglomeration.

Abstract: An electric oil pump comprises a stator assembly and an electronic control panel assembly which are electrically connected. The electronic control panel assembly comprises an electronic component. The electric oil pump further comprises a conductive pump housing and a conductive member that electrically connects a reference ground layer of the electronic control panel assembly and the pump housing. The above arrangement facilitates reducing electromagnetic radiation of the electronic control panel assembly, thereby reducing interference of the electromagnetic radiation of the electronic control panel assembly on the electronic component and/or other external devices.

Abstract: The present disclosure includes an ultrasound diagnostic apparatus with easy assembly and disassembly. The apparatus comprises an outer casing including a motherboard module having motherboard guiding plugs and motherboard ports installed thereon and a first outer-casing sliding device; and a main case structure being housed by the outer casing, including a transducer panel module coupled to an I/O module, a carrier board module coupled to the transducer panel module via the I/O module and having a PC module installed thereon process ultrasound data, carrier-board guiding holes to receive the motherboard guiding plugs, carrier-board ports to inter-plug in the motherboard ports, and a first main-case sliding device to slide in the first outer-casing sliding device and facilitate the main case structure to move relative to the outer casing; wherein the motherboard module and the I/O module are perpendicular to the transducer panel module and the carrier board module.

Abstract: The invention discloses an agitation device comprising an impeller, an agitating shaft and a power device. The impeller includes a disc, a hub and concave blades. Each blade consists of a concave surface which extends radially and has an annular sector-like shape, the projections of the upper and lower portions of the blade in the horizontal plane are two annular sectors, and the radian of the annular sector obtained by the projection of the upper portion is larger than that of the lower portion, and the annular sector-like shape and the rotation direction of blades are the same, so that each portion of the blades directly faces an incoming flow, the utilization efficiency of blades is increased and the impeller has low energy consumption and high gas-liquid dispersion efficiency. The device is efficient and energy-saving, has low power consumption, high mixing performance and high gas holdup and mass transfer performance.

Abstract: The invention discloses an agitation device comprising an impeller, an agitating shaft and a power device. The impeller includes a disc, a hub and concave blades. Each blade consists of a concave surface which extends radially and has an annular sector-like shape, the projections of the upper and lower portions of the blade in the horizontal plane are two annular sectors, and the radian of the annular sector obtained by the projection of the upper portion is larger than that of the lower portion, and the annular sector-like shape and the rotation direction of blades are the same, so that each portion of the blades directly faces an incoming flow, the utilization efficiency of blades is increased and the impeller has low energy consumption and high gas-liquid dispersion efficiency. The device is efficient and energy-saving, has low power consumption, high mixing performance and high gas holdup and mass transfer performance.

Abstract: The present disclosure includes an ultrasound diagnostic apparatus with easy assembly and disassembly. The apparatus comprises an outer casing including a motherboard module having motherboard guiding plugs and motherboard ports installed thereon and a first outer-casing sliding device; and a main case structure being housed by the outer casing, including a transducer panel module coupled to an I/O module, a carrier board module coupled to the transducer panel module via the I/O module and having a PC module installed thereon process ultrasound data, carrier-board guiding holes to receive the motherboard guiding plugs, carrier-board ports to inter-plug in the motherboard ports, and a first main-case sliding device to slide in the first outer-casing sliding device and facilitate the main case structure to move relative to the outer casing; wherein the motherboard module and the I/O module are perpendicular to the transducer panel module and the carrier board module.