The results show that the surface damage, the weight loss and the leakage rate of an O-ring all increase in proportion to its of the time exposed to atomic oxygen.
暴露时间越长，表面形貌受到的损坏越严重、质量减少量越多，泄漏率也就越大。
The effects of surface roughness at different areas of the seal faces on the performances such as gas film stiffness and leakage rate of a S-DGS were studied.
结果表明：密封端面各区域表面粗糙度对密封性能的影响规律各不相同，并且转速对表面粗糙度与密封性能的关系产生影响；
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