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19楼: Originally posted by casclzb at 2015-07-13 21:14:11
用真空泵在一定温度下就可以对包套进行抽真空,达到要求后就封闭包套...

包套中要是有粉末材料的话,抽真空会把粉体抽出来,怎么避免呢
21楼2015-07-14 10:09:28
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