The double moved cylinder pretreating-machine clears away the nonidentical substance adhering to the surface of lump-shaped objects via centrifugal rolling friction collision.

双动滚笼式螺旋预处理机是通过对块状物体的离心滚动摩擦碰撞，清除其表面的非同质附着物。

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There exists a collision phenomenon in the protection law of knowledge property at present in China such like cross of right, double protection, and multi-protection.

我国目前的知识产权保护中存在有权利冲突现象，包括权利交叉、双重保护、多重保护等。

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Based on the study of anti-collision performance of this type of double-hulled structures, some useful conclusions about the improvement of collision strength are obtained.

文章还对该结构形式的承碰性能进行了探讨，获得了一些旨在改善碰撞强度的有用的结论。

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