In the middle of the roof is an air layer which is cooled and cleaned automatically by water spraying system linked to the rainwater collection tank.
屋顶的中部是通风口，通过连接雨水收集池的水喷淋装置自动化控制，实现冷凝和净化。
Expansion joint is adopted at the lower extreme of recycling machine, water cooled panel, platen superheater and the place piercing through roof.
返料器下端及水冷屏、屏式过热器穿过炉顶处均采用膨胀节。
A multitude of ring-shaped cracks and three water leakage points were discovered in the right side lower header of a boiler together with a cave-in of the boiler roof water-cooled wall.
锅炉右下集箱产生了很多环状裂纹和三个渗水点，同时顶棚水冷壁管塌陷。
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