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valve cone
auto. 气门头锥部
chem. 阀锥体
dril. 锥形阀体
met. 阀锥
tech. 阀锥 (体)
valve cone
: 25 phrases in 6 subjects
Automobiles10
Compressors2
Hydroelectric power stations4
Metallurgy6
Oil / petroleum1
Technology2