middlemann.中间人;经纪人
middleadj.中等的;中间的;中期的n.中间vt.放在中间;把 ... 对折
middle internodal tract中结间束
Middle-fine sandstone中细砂岩
middle-high elevation中高海拔
middle-maturity group中熟组
middle genicular artery膝中动脉
middle- and old-age中老年
Middle schools in towns城镇中学
Middle-Upper Devonian中上泥盆统
middle frequency source中频电源
middle-pier cofferdam中墩围堰