字词 | 矿井 |
释义 | 矿井 名mine (shaft); pit 矿井安全mine safety 矿井泵shaft/pit pump 矿井定向仪shaft orientational instrument 矿井开采年限mine service life 矿井火灾mine shaft fire; mine fire 矿井架headstock 矿井口pithead 矿井通风系统mine ventilation system 矿井支柱mine timbering 废矿井abandoned mine |
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