| 单词 | ground-mass |
| 释义 | > as lemmasground-mass ground-mass n. the compact basal part of an igneous rock, in which the distinctive crystals are imbedded. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > part of ground-mass1879 1879 F. Rutley Study of Rocks x. 168 In many cases felsite, or the groundmass of porphyries, consists of a microscopically fine-grained aggregate. < as lemmas |
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