The crystals were housed in magnificent Temples, some built of marble, others of crystalline sheets of beryl, corundum and diamond.
水晶被安置在宏伟的神殿里,一些为大理石建造,其他的由绿玉,刚玉,钻石建成。
This article analyzes the main factors and selection of rational cutting conditions influencing the surface flatness error and other defects in sawing marble plates with diamond saw blade.
本文分析了金刚石框锯在锯切大理石时,引起表面平面度偏差和其它缺陷的主要因素以及合理工作条件的选择。
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