dualtireadj.双轮的dualadj.双重的；成双的n.双数dual-tip conductivity probe双探针电导探头Dual Use Applications Program双功能应用计划Dual-factor Aauthentication双因素认证dual-purpose diaphragm wall“两墙合一”的地下连续墙dual non-linearity analysis双重非线性分析dual-directional regulation双向调节dualscatter laser velocimeter双重散射激光测速计dual-wavelength K -factor双波长K系数dual channel detection system双道探测系统dual-luciferase report gene双荧光素酶报告基因