亚洲一区欧美在线,日韩欧美视频免费观看,色戒的三场床戏分别是在几段,欧美日韩国产在线人成

Nearly all the arcs or circles of grooves on traditional distribution valves are concentric, yet eccentric circles or arcs are found in new-style distribution valves. This paper presents calculation formulas of a new-style distribution valve in camshaft connecting-rod type low speed high torque hydraulic motors. By making mechanical studies on the distribution valve based on presented formulas, some performance curves were gotten and some issues that should be noticed were pointed out when designing this new kind of distribution valve.