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pit prop相关的网络解释

查询词典 pit prop

与 pit prop 相关的网络解释 [注:此内容来源于网络,仅供参考]

pit head:井口站

"pit cable ","矿井缆" | "pit head ","井口站" | "pit prop ","支柱"

pit prop:矿用支柱

pit outline 露天矿场边界 | pit prop 矿用支柱 | pit quarry 地下运输露天矿

pit prop:坑柱

穴 (坑)植 Pit-planting | 坑柱 Pit-prop | 长锯 Pit-saw

pit prop:支柱

"pit head ","井口站" | "pit prop ","支柱" | "pit shaft ","直井"

recovery of pit prop:回柱

回采率 rate of extraction | 回柱 recovery of pit prop | 甲烷 methane; firedamp

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