dual RF双射频
dualadj.双重的;成双的n.双数
dual balmaced mixer双平衡混频器
dual circuitry check双重电路校验
dual nuclide adapter双核素接合器
dual-receiver mode双接收模式
dual exact sequences对偶正合列
dual control circuit双控制电路
dual-stroke manner双行程形式
dual completion well双油管完井
dual-purpose drill两用条播机
Dual metal clad pipe双金属复合管