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04-09 17:08
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材料科学和工程基础 FUNDAMENTALS OF MATERIALS SCIENCE AND ENGINEERI...
04-08 10:02
颜料是指能使物体染上颜色的物质。颜料有可溶性的和不可溶性的,有无机的和有机的区别。无机颜料一般是矿物性物质,人类很早就知...
04-08 10:01