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chimney shaft (房頂上的)煙囪;(工廠等的)大煙囪。

chimney stack

Non - circular calculating method in additional moment of r . c . chimney shaft 煙囪筒身附加彎矩非循環計算方法

Formwork construction of 100 m high concrete chimney shaft 百米混凝土煙囪內井架翻模施工