3349| 11
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哪位大神對(duì)旋片式真空泵的旋片有研究? |
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相關(guān)帖子
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點(diǎn)評(píng)
這就太外行了。。。。。泵的葉片用塑料的太多了pps+30%TF peek+10cf
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點(diǎn)評(píng)
幫你頂一頂而已,搞旋片材料還得請(qǐng)高人。
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