double-channel nitrogen laser 双通道氮激光器
double-channel planar buried heterostructure laser 双通道板状掩埋式异质结构激光器
double-channel super-short-wave wireless telephone 双工超短波无线电话机
double-check snow plough 双侧板式雪犁
double-check valve 双止回阀
double-coated electrode 双层药皮焊条
double-coated paper 双层涂料纸
double-colour plastic extruder 双色塑料挤出机
double-column hand-operated hydraulic press 双柱手工液压机
double-column hydraulic planer 双柱液压刨床
double-compound engine 双联双胀式蒸汽机
double-compound turbo jet 双轴涡轮喷气发动机
double-cone antenna 双锥形天线
double-cone blender 双锥体混合机
double-cone clutch 双锥离合器
double-cone coiler 双锥式卷取机
double-connected rectifier 双重连接整流器
double-crank mill 双曲轴轧机
double-crank press 双曲轴重压机
double-crank shaft engine 双曲轴发动机
double-crank shaft 双曲轴
