dualtireadj.双轮的dualadj.双重的；成双的n.双数dual linear polarimetric radar双线偏振雷达Dual-arm space robot systems双臂空间机器人dual isotope imaging technique双同位素显像技术dual-purpose packing machine两用包装机dual-processor configuration双处理器结构dual-transactions assumption双重交易假设dual quantitative similarities双定量相似度dual-freedom Smith predictor自由度Smith预估器dual-variable control theory双变量控制理论dual exchangeable disc storage双份可交换的磁盘存储器