홈 > Term: knurs and knots
knurs and knots
The stony nodules found lodged in the strata; commonly harder than the rest of the mass of the strata.
- 품사: noun
- 분야/도메인: 광업
- 카테고리: 일반 광산; Mineral mining
- Government Agency: USBM
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- ed.young
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