Vane pump: vane pump into double effect and single effect vane pump.
叶片泵：分为双效果叶片泵和单效果叶片泵。
The double action vane pump using extensively at present has great energy waste;
目前使用广泛的双作用叶片泵存在着较大的能量浪费；
The double-acting variable-vane pump is a new type of variable pump.
双作用式变量叶片泵是一种新型变量泵。
The utility model relates to a double support structure vane pump.
一种新型双支承结构叶片泵。
The utility model relates to a double support structure vane pump.
一种新型双支承结构叶片泵。
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