| 单词 | copper-rain |
| 释义 | > as lemmascopper-rain copper-rain n. minute globules thrown up from the surface of molten copper when it contains but little suboxide (Raymond Mining Gloss.). ΚΠ 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 123 Copper-rain, minute globules thrown up from the surface of molten copper, when it contains but little suboxide. < as lemmas |
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