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- W2388316673 abstract "Shendong Mine Group established economy evaluation system for equipment of excavation,and confirmed seven evaluation indexes.These indexes included the total life-span cost,the operation rate,the malfunction time,the standby quotiety,the output loss for every ten thousand ton coal,the investment for every ton coal,the input-output ratio for the total life-span.Taking hydraulic support in fully mechanized coal mining face as an example,the nine type of hydraulic support are comparatively analyzed to get a result,the production would be instructively guided by the result." @default.
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- W2388316673 date "2010-01-01" @default.
- W2388316673 modified "2023-09-28" @default.
- W2388316673 title "Economy Evaluation Method of Equipment of Excavation" @default.
- W2388316673 hasPublicationYear "2010" @default.
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