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1、
The new comprehensive utilization technology of phosphatic dolomite is discussed.
论述了含磷白云石的综合利用新工艺.
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2、
Methods of direct prodction of phosphoric acid from phosphatic rock are described.
本文介绍了采用阴离子交换树脂,从磷矿石中直接制取磷酸的方法.
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