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Use a coffee grinder to grind the sheets into a powder.
利用咖啡研磨机把一大片磨碎成粉末。
youdao
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The adjustment process of lead powder ball grinder was introduced.
介绍铅粉球磨机的调试过程。
youdao
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The adjustment process of lead powder ball grinder was introduced.
介绍铅粉球磨机的调试过程。
youdao