She was wearing wool slacks and a paisley smock.她穿着羊毛宽松裤和涡旋花纹宽袍。A girl in a red smock tripped down the hill...一个身穿红色罩衫的女孩迈着轻快的步子下山。She wore a pink nylon smock similar to a nurse's uniform.她穿着一件粉红的尼龙罩衫,就象护士工作服一样.A lo...
流体的流速与流线的间距成反比.The velocity of the fluid is inversely proportional to the spacing of the streamlines.流线的计算与显示是流场可视化中的一项基本技术.Streamline construction is a technique for flow visualization.近代飞机和飞弹表面的气流可能是流线的.The flow of air...