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物料（）越低，物料難以粉磨，磨機產(chǎn)量就越低

答案：易粉性系數(shù)

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物料（）越大，物料越容易粉磨，磨機產(chǎn)量越高

答案：易粉性系數(shù)

物料的()是表示物料本身被粉碎的難易程度的一種物理性質(zhì)

答案：易粉性

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