k变量双轨码
two rail codes of K-variable
单轨双异质结二极管
monorail double heterojunction diode
道德双轨
the double-track in morality
价格双轨制
doubletrack prices system
dual pricing system
双轨道差分干涉测量技术
two-pass differential interferometry technique
双轨轨道回路
double rail track circuit