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18

2013.12

高速公路對石子的要求

高速公路對石子的要求主要是對砂石的要求。砂的粗細程度用細度模數(M)表示,一般分為粗、

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2013.11

石料生產線的環保工作

環保工作要做減法,減少高能耗的產業、減少高污染的產業。石料生產線行業是一個高污染的

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