庆祝莎士比亚诞辰400周年to celebrate the quatercentenary of Shakespeare's birth我们到的那天正是华盛顿的诞辰, 风雪交加, 天气极冷.We arrived on Washington's Birthday, a freezing , blowy, snowy day.爱迪生诞辰纪念日.The anniversary Thomas Alva Edison'...
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...