单词 | crystallographic axis |
释义 | crystallographic axis [¦kris·tǝ·lō¦graf·ik `ak·sǝs] CRYSTALLOGRAPHY One of three lines (sometimes four, in the case of a hexagonal crystal), passing through a common point, that are chosen to have definite relation to the symmetry properties of a crystal, and are used as a reference in describing crystal symmetry and structure. |
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