| 单词 | double spar |
| 释义 | > as lemmasdouble spar double spar n. (a name for) Iceland spar, as being double-refracting. ΚΠ 1877 I. Rosenthal Gen. Physiol. Muscles & Nerves 15 Iceland-spar or, as it is also called, double spar. < as lemmas |
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