doublegateadj.双闸门的(双选通的)doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double-antibody solid-phase technique双抗体固相技术double-diffusion gel precipitation test凝胶双向扩散沉淀试验double-faced-pattern clay coin moulds铸钱工艺double-antibody sandwich indirect ELISA双抗体夹心间接ELISADouble salient pole electromagnetic motor电励磁双凸极电机Double-column adsorption chromatography双柱吸附法Double-step algorithm for straight line双步直线算法double-examine for dubious noisy pixels噪声二次检测double opening and closing reconstruction二次重建double isotope dilution derivative method双同位素(稀释)衍生物法

1. The design requirements were for three lanes of vehicular traffic and a single rail line in each direction.
   这个设计要求在每个方向有三条交通车道和一条单线铁路线。