1.前言回顾机械能转变为液压能(压力×流量)的油泵发展历史可以看出,对今天油压泵贡献最大的是二十世纪初詹尼的轴向柱塞泵和回转径向柱塞泵。日本在战前先后引进了这两种型式的油泵技术,并不断加以改进,以供军舰操舵和炮塔驱动之用。直到六十年代 1. Preface Recalling the History of Development of a Pump That Transforms Mechanical Energy into Hydraulic Energy (Pressure × Flow) As can be seen, the most significant contribution to today’s hydraulic pumps is the axial piston pump and the rotary radial piston pump from the early twentieth century . Japan introduced two types of oil pump technology successively before the war, and continuously improved them for the steamer and turret drive of warships. Until the sixties