这个词是什么意思？
A group of phosphate minerals that includes ten mineral species and has the general formula X5(YO4)3Z, where X is usually calcium or lead, Y is phosphorus or arsenic, and Z is chlorine, fluorine, or OH-. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D001031 · MeSH 2026。
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