stack cover
... 烟囱,轴道,管道 tunnel 烟囱盖板 stack cover 烟道 uptake ...
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在冲天炉上部烟囱顶端设安全平衡盖板,以保证生产的正常进行;
The safety of production can be assured by installation of a balance safety valve at the top of the stack over the cupola furnace.
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