As chemical precursors stream onto the surface of a rolling metal or plastic substrate, they react with one another to form a network of nanoparticles.

各化学母质流向滚动中的金属或塑料基片的表面，他们互相作用，形成一层纳米级微粒网状结构。

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Add wind passing over rolling terrain and "you get the same wavy effect as on the surface of water."

加上丘陵地区起伏的风向，就产生与水面泛起的波纹相同的效应。

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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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"Given the subtle slopes of the greens, don't be surprised if you see putts rolling off the putting surface should the wind get up, " he said.

BBC: THE LOWDOWN