Get up off your backside and do some work!起来干点活儿吧！What he needs is a good boot up the backside!他需要的是在他屁股上狠狠踢一脚.Allegedly, backside abet is enigmatic general Beijing president.据说, 背后主使乃是高深莫测的普京总统.He gave the donkey a migh...
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...