英语词汇“room and pillar mining”的翻译、意思、用法、释义-英汉汉英词典

单词	room and pillar mining
释义	room and pillar mining房柱法；煤柱法room and pillar mining房柱法；煤柱法電機工程room and pillar mining房柱法；煤柱法電力工程
随便看	weft density weft detector wefte wefted weft face weft face corkscrew weft feeler weft feeler box weft feeler motion weft float weft flop weft fork weft fork catch weft fork hammer weft fork holder weft fork holder pin weft fork inter lever weft fork lever weft fork limiting wire weft fork motion weft fork release motion weft fork spindle weft fringe weft grid weft hairline