The preparation method comprises: processing the base material by one of the processing methods such as chemical etching, punching and die cast so as to form the protruding area and the non-protruding area on the surface of the base material; and performing spluttering treatment on the surface of the base material with the protruding area and the non-protruding area at least once so as to make the thicknesses of the film layers on the protruding area and the non-protruding area differ.
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The composite material produced by the preparation method of the invention has the advantages of light weight, easy synthesis, low price, good environmental protection and high light transmissivity.
用本发明制备的复合材料质轻、易合成、价格低、环境友好、可见光透过率高。
Objective To study the preparation method of ceftiofur sodium.
目的头孢噻呋钠制备工艺的研究。
Objective To study the preparation method of scutellaria eye drop.
目的研究黄芩滴眼剂的制备方法。
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