By choosing different specifications of precision filtration material, can achieve the requirement of precision filtration, rough filtration, micro filter, etc.

通过选择不同规格精密的滤材，即可达到所要求的粗滤、精滤、微滤、除菌等不同的效果。

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The sleeve surface processing is discussed, choosing different abrasive, time and pressure will result in different surface shape and rough parameter.

讨论了套筒表面的喷砂处理，选择不同的磨料、时间及压力可得到套筒不同的表面形状及粗糙度。

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We presented weighted mean roughness, a new concept based on rough sets theory which is regarded as the criteria for choosing attributes.

基于粗糙集的理论提出了加权平均粗糙度的概念，将其作为选择分离属性的标准。

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Choosing March 31, 2009 as a rough bottom, even Citigroup ( C) and Bank of America ( BAC), which remain relative basket cases to this day, would have brought you a roughly 50% gain.

FORBES: Connect