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dries
Seams in the rock, which are usually invisible in the freshly quarried material, but which may open up in cutting or on exposure to the weather.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
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创建者
- ed.young
- 100% positive feedback
(Milwaukee, United States)