double PID双PIDdoubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份Double valve replaeement双瓣替换术double favorable balance双顺差double -card factoring双证融通double button microphone双钮传声器double sliding back gear双滑动背齿轮double-reduction drive两级减速传动double pedicle skin flap双蒂皮瓣double punishment system双罚制double-acting cylinder双作用汽缸double-quality teacher“双师型”教师