Hydraulic control technology: hydraulic direction, pressure, flow control valve, proportional valve, ball valve.

液压控制技术：液压方向、压力、流量控制阀、比例阀、球阀。

youdao

Hydraulic control technology: hydraulic direction, pressure, flow control valve, proportional valve, ball valve.

液压控制技术：液压方向、压力、流量控制阀、比例阀、球阀。

youdao