Ball mill is an efficient tool for grinding many materials into fine powder.
球磨机是一种有效的工具磨许多材料成细粉。
Ball Mills are a very efficient tool for grinding many materials into a fine powder.
球磨机是一个非常有效的工具，许多材料研磨成细粉。
Phosphoric acid was selected as bond to make phosphate rock powder into ball material.
研究选用磷酸作粘结剂，使碎磷矿粉粘结成型。
The adjustment process of lead powder ball grinder was introduced.
介绍铅粉球磨机的调试过程。
The powder yellow ball is obviously reduced.
粉料黄球明显减少。
The powder yellow ball is obviously reduced.
粉料黄球明显减少。
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