double PID双PID
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double - arched bridge双曲拱桥
double-duty lube truck两用润滑油运输货车
double-sideband system双边带系统, 双边带制
double polishing machine双面抛光
double-Gauss objective双高斯型物镜
double-current furnace双电流电炉
double flow transmission双流传动
double-decked platform双层平台
double-wavelength scan双波长扫描
double-heterostructure双异质结构