dualistn.二元论者
dualadj.双重的;成双的n.双数
dual delayed sweep双重延迟扫描
Dual-chamber bag双室袋
dual mass flywheel双质量飞轮
dual cast cylinder复铸汽缸
dual certification双证
dual-band filter双通道滤光片
dual nationalities双重国籍
dual slide scanner双联幻灯片析像器
dual speed control双速控制
dual chromatograph双色谱仪