An irregularity in the structure of a diamond, caused by a change of direction in the grain as a result of twinning (see twinning, n.2 2). Also: a…
| 单词 | θ215563 |
| 释义 | society > occupation and work > materials > raw material > gem or precious stone > diamond > [noun] > irregularity in structure of diamond (1) naat1902 An irregularity in the structure of a diamond, caused by a change of direction in the grain as a result of twinning (see twinning, n.2 2). Also: a… |
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