往复摇动10次利用每粒级质量算出每次筛分平均粒度组成。
Rocking back and forth 10 times to use each piece costs calculated for each screening-level quality of the composition of average particle size.
往复摇动10次利用每粒级质量算出每次筛分平均粒度组成。
Rocking back and forth 10 times to use each piece costs calculated for each screening-level quality of the composition of average particle size.
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