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double key
 double key
agric. 双键
cryptogr. 双重密钥
| coupling
 coupling
el. 耦合
hydroel.st. 耦合
met. 匹配
water.res. 连接; 接头; 离合器

to phrases
double key
agric. 双键
cryptogr. 双重密钥
tech. 双头切口扳手; 双健
double key: 14 phrases in 7 subjects
Automobiles2
Electronics1
General1
Oil / petroleum1
Shipbuilding1
Technology7
Wrestling1