| 单词 | grain-boundary |
| 释义 | > as lemmasgrain-boundary grain-boundary n. ΚΠ 1920 Jrnl. Inst. Metals 23 462 This is rather deep etching, but the grain boundaries were revealed better than by light etching. 1957 D. McLean Grain Boundaries in Metals i. 1 A grain boundary in a piece of metal is the boundary separating two crystals (or ‘grains’) that differ either in crystallographic orientation, composition, or dimensions of the crystal lattice, or in two or all of these properties. < as lemmas |
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