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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在地表上以先左右后上下的顺序移动晶面机，研磨直到地表光亮，每次操作区域 3 5 平米。

Move the crystallizing machine onto the surface, first move left and right then move up and down. Polish until the floor becomes glossy and lustrous. Each operation covers about 3~5 square meters.

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