帮理解一下这句话? For columns one vapour-line running down from the top head nozzle to the lower tangent line shall be considered, with an increased diameter to include insulation . 应考虑在 塔设备 中设置一根从顶部封头接管至底部切向管道的升气管, 扩大直径以包括保温层 这句后面一段实在不晓得翻成什么好,感觉没什么逻辑关系,请各位帮忙理解下! 再贴点上文 A description is given below of how calculate the additional surfaces exposed to wind during erection, hydrostatic test and operation. 下文描述了在安装、水压 测试 和生产操作过程中,如何计算暴露于风中额外表面。(这句翻得也不怎么好 ) a) Vapour-line For columns one vapour-line running down from the top head nozzle to the lower tangent line shall be considered, with an increased diameter to include insulation . [ ]查看更多4个回答 . 2人已关注