dualtireadj.双轮的dualadj.双重的；成双的n.双数Dual HD Component Video Inputdualistic ownership structure二元股份结构dual-layer adhesive machine双面涂胶机dual-frequency observat ion双频观测值dual loop phase-locked loop双环路锁相环dual waveband infrared sensor双波段红外传感器dual-cross search algorithm双十字搜索算法dual ventilation local-fans双局扇dual access tributary station双通道支局dual-mode propulsion system双模式推进系统