帮助他们逃离管道铺设的奇境，旋转管道和拾取要求的食品。
Pipeline to help them escape from the Wonderland, rotating pipe and pick up food requirements.
建立了非旋转管道环缝焊接自动控制系统，并介绍了其系统结构和工作原理。
The automatic control system of circular seam welding process for non - rotated pipeline was developed in the paper.
我们知道，龙卷风在它的旋转管道里有一个无风点，而管道边上却有风速很快的风。
As is known, a tornado has a calm in the center of the swirling tube, the high winds at the edges of the tube.
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