Terms containing double code

Subject	English	Chinese
anim.husb.	double code	双联密码
tech.	double code	对偶码
tech.	double difference code	二异码
el.	double error correcting code	双纠错码
oil	double stencil pipe grade code	双标记钻杆钢级代号
telecom.	double-current cable code	双流水线电码
el.	vibrator double-current cable code	振动双流电报码