自动截止和逆止阀
automatic stop and check valve
卸压自动截止装置
Automatic cut-off device for pressure relief
电动截止阀
electric actuated stop valves
electric check valve
气动截止阀
pneumatic-operated stop valve
pneumatic stop valve
Y型阀截止阀
Y-valveY-body globe valve
半自动动力换档变速箱
semiautomatic power shift transmission
差动自动同步电机
differential selsyn motor
车间活动自动定时器
automatic plant exercise timer
船舶电气传动自动化
ship electrified transmission automation