液压二通、三通、四通螺纹式插装阀插装孔
Hydraulic fluid power—Two,three-and four-port screw-in cartridge valves—Cavities

2004-10-20

液压传动 二通、三通和四通 螺纹插装阀 插装孔
Hydraulic fluid power - Two-,three- and four-port screw-in cartridge valves - Cavities

2014-07-09

液压传动 电调制液压控制阀 第2部分：三通方向流量控制阀试验方法
Hydraulic fluid power—Electrically modulated hydraulic control valves—Part 2: Test methods for three-port directional flow-control valves

2017-11-01