in-service carbon steel superheater header of the actuarial method of creep life
在役碳钢过热器集箱蠕变寿命的精算方法
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lapping the superheater header unit seats, the connection between the superheater header & tubes.
研磨这过热器设备头单位位置,连接在————过热器设备头
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the superheater header seats are machined and then polished at a 45 degree bevel.
过热头所在地在机械和然后抛光在这45度斜角。
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670-5型锅炉屏式过热器联箱堵板固定方式探讨与改进
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