This paper analyze the influence of grinding wheel surface characteristics and dressing on grinding roughness of surface.

本文分析了砂轮表面特性和修整对磨削表面粗糙度的影响；

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Especially, this paper is to deal with the effect of the dressing parameters on the grinding wheel surface topography, and, by means o...

本文主要论述修整参数对砂轮表面地形的影响，借助微型计算机和透射电子显微镜还对高速低粗糙度磨削机理进行了一些探讨。

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Portable grinding tools need to be equipped with safety guards to protect workers not only from the moving wheel surface, but also from flying fragments in case of breakage.

便携式研磨工具应装有安全防护装置，这样不仅可防止工人接触运转的砂轮表面，而且他们也不会被破裂时飞溅的碎片击中。

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Its first grainy, wide-angle images showed its own left rear wheel parked on the surface of Gale Crater near the equator of Mars, close to the foot of a three-mile-high mountain it aims to explore in months to come.

WSJ: NASA's Curiosity Rover Lands on Mars

"They've got a run of asphalt that's coming out of the surface and, also, I did notice at least one pothole in the main wheel track of the road as well, which is surprising for a motorway surface, " Mr Bullock said.

BBC: Condition of M5 near Bridgwater raises concerns

"For example, even on a road surface with minor ridges or furrows, the driver no longer has to grip the steering wheel tightly and make detailed adjustments, so travelling on the intended path becomes easier, " it said in a statement.

BBC: Nissan steer-by-wire cars set for showrooms by 2013