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徐曉煜
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樓主  發(fā)表于: 2017-12-08 09:29
圖片：
一個(gè)氣動(dòng)元件，不知道做什么用的，一臺機器上的
xghjiayou
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1樓  發(fā)表于: 2017-12-08 11:28
如果滾花的手柄會(huì )出氣，那就是真空發(fā)生器，如果不會(huì )那就是調壓閥！

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