Seating faces are hardfaced, ground and lapped.
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ground and lapped seal 研磨面搭接封接
ground and lapped
研磨和研磨
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Ground and lapped to 2 RMS finish after weld-in.
焊接装配后，进行研磨，抛光精度达到2 RMS。
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Seat face Stellited, ground and lapped to a mirror finish.
钨铬钴合金面阀座，经过研磨抛光达到镜面抛光度。
阀座面为钨铬钴合金，经过研磨抛光达到镜面光洁度。
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