与这方面的知识，你将能够创造并维持一个高度专业性，磨光业务站点。

With this knowledge you will be able to create and maintain a highly professional, polished business site.

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与这方面的知识，你将能够创造并维持一个高度专业性，磨光业务站点。

It is differed in terms of the polished surface of cover a.

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两侧都经过精密光亮磨光的刀片确保填料腔的气密性密封。闸板的密封面经过研磨，以提供最好的阀座密封性。

Precision ground blade on both sides for tighter packing chamber sealing. Sealing face of the gate is lapped to provide the best possible seat tightness.

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