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main valve
 main valve
auto. 主 阀
dril. 总闸门
el. 主 阀; 主汽阀
met. 主阀
space 主活门
| actuator
 actuator
el. tech. 驱动器

to phrases
main valve
auto. 分配
dril. 总闸门
met. 主阀
space 主活门
tech. 总阀; 干管阀
main stop valve
el. 截止; 主汽阀
main valve actuator
: 95 phrases in 18 subjects
Automobiles2
Aviation7
Compressors1
Drilling1
Electric machinery1
Electronics9
Exhibitions1
Hydroelectric power stations3
Metallurgy6
Nuclear and fusion power1
Oil / petroleum1
Oil processing plants1
Port facilities1
Rail transport3
Refrigeration2
Shipbuilding8
Space6
Technology41