12838| 22
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閥門設(shè)計時需要哪些標(biāo)準(zhǔn)和資料 |
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點(diǎn)評
這個就真不好說了,,再找找吧,我對工業(yè)閥門只是接觸而已,,做過幾天工業(yè)管道,,設(shè)計的話不大清楚了
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