ホーム > Term: pencil mark
pencil mark
(Australia) A thin bed of dark slate, about the thickness of the lead of a carpenter's pencil, that is parallel to the indicator.
- スピーチの一部 noun
- 産業/ドメイン 炭鉱
- カテゴリ 炭鉱全般; Mineral mining
- Government Agency: USBM
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作成者
- ed.young
- 100% positive feedback
(Milwaukee, United States)