Abstract: The disclosure provides a method for preparing an electrode film layer on a surface of a solar cell substrate. The method includes: a) obtaining a metal electrode material melt by heating and melting a metal electrode material under a vacuum condition; b) bombarding the metal electrode material melt with an ion source at low energy, so that it is sputtered and deposited on the surface of the solar cell substrate to form the electrode film layer; in which the energy of low energy bombarding is 30 eV to 80 eV.

Abstract: Disclosed are a method for determining an error component of a photoelectric theodolite and a method for compensating an error component of a photoelectric theodolite. A celestial region is divided into 60 sub-regions by star selection software, a star is selected from each sub-region to serve as a reference star, the theodolite is controlled to sequentially point at the reference stars, an azimuth deviation and an elevation deviation for each reference star are calculated, an axis systematic error pointing model, an azimuth error equation and an elevation error equation for the photoelectric theodolite are established, a least squares estimated value of an azimuth error component and a least squares estimated value of an elevation error component are calculated by a least squares method, a reference star with a large fitting residual is excluded, and an iterative calculation is performed repeatedly.

Abstract: The present invention relates to a special-shaped part machining mold and design and assembly methods thereof. The design method includes: constructing a multi-layer combined mold according to parameters required by special-shaped part machining; analyzing an equivalent stress distribution after the mold is assembled, selecting a part of equivalent stress evaluation points, and performing equivalent strength simulation to obtain a pressing sleeve ratio change curve circumferentially distributed at a matching surface of the mold; obtaining curve changes at different positions in a circumferential direction of the mold according to the pressing sleeve ratio change curve circumferentially distributed at the matching surface of the mold, so that a new mold is designed; determining whether the new mold has a condition of uneven stress distribution or not; if yes, repeatedly analyzing equivalent stress distribution after the mold is assembled; and if not, completing the design of the mold.

Abstract: The disclosure provides a method for preparing an electrode film layer on a surface of a solar cell substrate. The method includes: a) obtaining a metal electrode material melt by heating and melting a metal electrode material under a vacuum condition; b) bombarding the metal electrode material melt with an ion source at low energy, so that it is sputtered and deposited on the surface of the solar cell substrate to form the electrode film layer; in which the energy of low energy bombarding is 30 eV to 80 eV.

Abstract: An advanced video coding and decoding chip and a method with an optimized processing sequence for the sub-blocks, each including 4×4 pixels, of a macroblock in a discrete cosine transform (DCT) and an inverse DCT are disclosed, wherein the compression hardware and the reconstruction hardware execute the compression and the reconstruction of at least part of a field in parallel.

Abstract: An advanced video coding and decoding chip and a method with an optimized processing sequence for the sub-blocks, each including 4×4 pixels, of a macroblock in a discrete cosine transform (DCT) and an inverse DCT are disclosed, wherein the compression hardware and the reconstruction hardware execute the compression and the reconstruction of at least part of a field in parallel.