Rotary vane vacuumpump is the most vacuum equipment used in vacuum trade.
旋片式真空泵是真空行业中使用最多的真空获得设备。
2
Rotary piston pump is a volume type vacuumpump and is applied widely, but there has been no method for exactly calculating dynamic balance of rotary piston up to the present.
滑阀真空泵是一种容积式真空泵，在各工业领域广泛应用。但该泵的旋转活塞平衡长期以来无精确计算方法。
3
As there were leak on contact place between shaft and rotor body in built up hollow rotor, dropping discharg gas speed of pump and efficiency applied of oil sealed sliding vane rotaryvacuumpump.