船用手动比例流量方向复合阀的英文

• manual operated marine proportional control valves

• 船:    boat; ship; vessels
• 用:    40分钟跑完全程 run the course in 4 ...
• 手动:    hand movement; manual operat ...
• 比例:    scale; scaling
• 流量:    rate of flow; flow; runoff; ...

例句与用法

1. Manual proportional flow directional block valve for ships
   船用手动比例流量方向复合阀