... cage hoisting 罐笼提升 cage raising 吊罐法掘进 cage shaft 罐笼井井筒 ...
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天井吊罐法掘进 raising by cage Iift
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实践表明，用该机掘进天井与普通掘进法和吊罐法相比，可大大减少成井费用，经济效益较好。
It has been proved in practice that this machine can significantly reduce raising cost and yield better economical results by comparison with conventional raising and cage raising methods.
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