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百度
蘇州硫化機 油壓機維修
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樓主  發(fā)表于: 2008-02-28 09:13
        低 真 空：105 ～102 Pa　　(760～1 Torr)
　　中 真 空：102 ～10-1 Pa　　(1～10-3 Torr)
　　高 真 空：10-1～10-5 Pa　　(10-3～10-7 Torr)
　　超高真空： ≤10-5 Pa　　(≤10-7 Torr)
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