electrical proportional direction valve 气动电控比例方向阀
electrohydraulic proportional direction valve 电液比例方向阀
electro-hydraulic proportional direction valve 电液比例方向阀
proportional direction flow valve 比例方向流量阀
proportional direction throttle valve 比例方向节流阀
PROPORTIONAL DIRECTION CONTROL VALVE Rexroth-A 件
PROPORTIONAL DIRECTION CONTROL VALVE MOOG 件
electrohydraulic proportional direction throttle valve 电液比例方向节流阀
electrohyeraulic proportional direction throttle valve 电液比例阀
The proportional direction valve and the proportional relief valve were adopted to timely control the belt tension and its working principles were introduce.
分别采用比例方向流量阀和比例溢流阀来实时控制输送带张力，并分别介绍了其工作原理。
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。
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