double conic rotary vacuum dryer
rotary piston vacuum pump
rotary pump
旋转泵
旋转水泵
回转泵
旋转式泵
回转式泵
回转式容积泵
转子泵
旋<转>泵
旋转筛
rotary pump with liquid ring
rotary vacuum disk filter
Rotary Vacuum Drum Filter
rotary vane water meter
slide-vane type rotary pump
variable-delivery rotary pump
eccentric sliding vane pump