安全阀开启压力
relief valve opening pressure
安全阀手动启开装置
safety valve easing gear
safety valve lifting gear
铲刀控制阀安全阀
blade control valve relief valve
充油安全阀阀芯
charge relief valve poppet
电磁阀安全阀
solenoid valve relief valve
辅助阀安全阀调定
auxiliary valve relief valve setting
提升器电磁阀安全阀
lift solenoid valve relief valve
压力控制顺序阀安全阀
priority valve relief valve
真空安全开启压力
vacuum relief cracking pressure
转向阀安全阀
steering valve relief valve
转向控制阀安全阀
steering control valve relief valve
tap模锻锤安全阀总管三通管试验分接头
impactor relief valve manifold tee test