Main Chute(主伞), 此释义来源于网络辞典。
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main chute shaft 主溜井
upper chute main air valve 上滑道主风阀
Due to collapse accident of main chute took place in Xincheng Gold mine, the ore lifting system of main shaft was paralysed which caused grave effect on mine operation.
新城金矿主溜矿井曾发生塌落事故，造成了主竖井矿石提升系统的瘫痪，严重影响了矿山生产任务的完成。
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