在低级晶族光学特性的研究中,光性符号的确定对未知晶体及矿物的鉴定有着重要的意义。
In the study of optical properties of low class crystal system, the identification of optic sign has important meaning to unknown crystal and mineral determination.
在低级晶族光学特性的研究中,光性符号的确定对未知晶体及矿物的鉴定有着重要的意义。
In the study of optical properties of low class crystal system, the identification of optic sign has important meaning to unknown crystal and mineral determination.
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