The advantages and disadvantages of the roots vacuum pump
Posted on Tue, 22 May 2018 09:12:00 +0000
The roots vacuum pump is a kind of rotary vacuum pump volume.Its structure is evolved by the roots blower.It first appeared in 1944 in Germany, is in order to adapt to within 10 ~ 1000 pa pressure with large pumping speed of vacuum smelting system and used as mechanical booster pump. Depending on...
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