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联邦德国Atos液压件有限公司开发了一种新型PVA变量叶片泵。这种变量叶片泵的摆动悬浮式定子结构和集成电子泵控机构已申请了专利。新型的结构可使泵有效高的容积效
Federal Republic of Germany Atos Hydraulic Parts Co., Ltd. has developed a new type of PVA variable displacement vane pump. This variable-vane pump oscillating suspension stator structure and integrated electronic pump control mechanism has been patented. The new structure makes the pump effective volumetric efficiency