The Rotor profile is the key for Roots pump.
罗茨泵转子型线是罗茨泵的关键。
Roots pump is the main pump to pump for the former spin-pump series from.
是以罗茨泵为主泵，以旋片泵为前级泵串联而成。
LS series wet roots vacuum pump is a rough vacuum pumping equipment.
LS型直排大气湿式罗茨真空泵属粗真空获得设备。
LS series wet roots vacuum pump is a rough vacuum pumping equipment.
LS型直排大气湿式罗茨真空泵属粗真空获得设备。
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