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钨铬钴合金面阀座，经过研磨抛光达到镜面抛光度。
Seat face Stellited, ground and lapped to a mirror finish.
youdao
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阀座面为钨铬钴合金，经过研磨抛光达到镜面光洁度。
Seat face Stellited, ground and lapped to a mirror finish.
youdao
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阀座面为钨铬钴合金，经过研磨抛光达到镜面光洁度。
Seat face Stellited, ground and lapped to a mirror finish.
youdao