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单词 protosystematic
释义

> as lemmas

protosystematic
† protosystematic adj. Crystallography, Obsolete designating certain planes parallel to pairs of crystallographic axes.
ΚΠ
1878 H. P. Gurney Crystallogr. 72 These are sometimes called the protosystematic planes.
1895 N. Story-Maskelyne Crystallogr. 110 The plane or planes to which a plane-system is symmetrical will be..called its systematic planes; where it is symmetrical to different planes or groups of planes not conformable in their symmetry, these several planes or groups of planes are designated as proto-systematic, deutero-systematic, and trito-systematic planes or groups of planes.
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