碳酸钙

碳酸钙的用法和样例:

例句

  1. 珍珠在几种软体动物的贝壳中,围绕着一粒沙子或其他外来物质形成的一种光滑、有色泽、具有不同颜色且主要是碳酸钙的沉积物,被珍视为宝石
    A smooth, lustrous, variously colored deposit, chiefly calcium carbonate, formed around a grain of sand or other foreign matter in the shells of certain mollusks and valued as a gem.

短语

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