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罐笼提升
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罐笼提升
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罐笼提升
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cage hoisting
罐笼提升
利用罐笼提升井下矿石、废石,升降人员、设备、材料等的过程。是矿山的竖井提升方式之一,也是人员、设备、材料下井最便捷的方式。
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weed seed longevity
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