These units are employed as grit arrester on small cupola.
这种装置在小型冲天炉中是作为砂粒分离器使用的。
It is easy to cause various defects while using small cupola to smelt the nodular graphite iron.
采用小型冲天炉熔炼球铁，易于产生各种缺陷。
Gazebo: Lookout in the form of a turret, cupola (small, lanternlike dome), or Garden house set on a height to give an extensive view.
眺台：一种观景楼，形式有塔楼、圆顶小亭等，多设在可供登临远望的高地。
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