refined potassium chloride
... 净化精制 purifying ; purification 精制大漆 refinedchineselacquer 精制氯化钾 refined potassium chloride ...
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新工艺的主要改进为氯化钾原料不经精制而直接碳化，从而在成本相仿的情况下提高了产品档次。
With improvement unrefined potassium chloride is directly subjected to carbonization and therefore raises the product quality with similar cost.
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