• 连续两节(课)

double saw复齿锯doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double-Gauss derivatives双高斯型物镜变型double sampling inspection二重抽样检验double-major development双专业开发double marginalized people双重边缘人double -quality teachers“双师素质”教师Double Ninth Festival poem重阳诗double pour cast iron roll双层铸铁轧辊double eccentric connector双偏心连接器double-barrel carburetor双腔化油器double object constiuction双宾语结构