魍者歸來 發(fā)表于 2019-11-20 16:527 Z0 r6 q8 s; N7 P5 _
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GB/T27979-2011 ...
超高耐磨制品 發(fā)表于 2019-11-21 17:08+ y! P7 }4 l" ]: \( N& Y( G5 j
管道內(nèi)的粉體溫度大概多少度?
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