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单词 dimetric
释义

dimetricadj.

/dʌɪˈmɛtrɪk/
Etymology: < Greek δι-, δίς twice + μέτρον measure + -ic suffix: compare -metric comb. form.
Crystallography.
Applied to a system of crystals having three axes at right angles, the two lateral axes being equal to each other but unequal to the vertical axis; = tetragonal adj. 5.
ΚΠ
1868 J. D. Dana Syst. Mineral. (ed. 5) Introd. 21 The names Monometric, Dimetric, and Trimetric, used in former editions of this work, have been set aside..The names want precision, the hexagonal system being as much dimetric as the tetragonal.
1868 J. D. Dana Syst. Mineral. (ed. 5) Introd. 24 Tetragonal System (also called Quadratic, Pyramidal, Monodimetric, Dimetric).
1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 288 The dimetric..three axes are here also observed, at right angles to each other.
This entry has not yet been fully updated (first published 1896; most recently modified version published online March 2022).
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adj.1868
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