Home > Term: 沙袋發力
沙袋發力
煤層頂板，存款的冰川泥石流形成的沖刷和填充後煤形成。
- Vārdšķira: noun
- Nozare/domēns: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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Autors
- Winnie
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(V.I.P) 58130 points - 100% positive feedback
(China)
