... 纵导函数 longitudinal derivative 纵置锅鼓 longitudinal drum 纵向弹性 longitudinal elasticity ...
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longitudinal drum boiler [动力] 纵汽包锅炉
longitudinal-drum boiler 纵置汽包锅炉
longitudinal seam of steam drum 锅筒纵缝
Because of the much thick wall of large capacity boiler drum, the pressed and weld longitudinal seam is used to manufacture the drum shell ring.
由于大容量电站锅炉汽包的壁较厚，所以在汽包筒节制造时常采用压制成两个半圆瓦片再焊接而成的方法。
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