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。
Non-rotating, double acting, double rod.
非旋转式，双作用，双杆。
Control type: normally closed, normally open, double acting.
控制形式：标准常闭、常开、双作用。
Available in Double Acting (DA) and Spring Return (SR) version.
可在双代理(DA)和弹簧返回(简)版本。
The double acting reciprocating mud pump one time every two suction drainage action.
而双作用式泥浆泵每往复一次完成两次吸排水行动。
Double Acting Centermanifold for Hydraulic Power Pack Unit.
双作用动力单元中间阀块。
Double Acting Centermanifold for Hydraulic Power Pack Unit.
双作用动力单元中间阀块。
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