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three-valve
gen. 三气门的; 三电子管的; 三灯的
auto. 三气门的每缸两个进气门,一个排气门
el. 三通阀的
tech. 三阀的
three-valve
: 51 phrases in 15 subjects
Automobiles6
Compressors1
Construction1
Drilling1
Electronics5
Hydroelectric power stations4
Metallurgy2
Nautical1
Nuclear and fusion power1
Oil / petroleum4
Plastics1
Rail transport1
Refrigeration6
Space1
Technology16