Three calculation methods are recommended to suit different cases of tubular heaters.
并根据管式加热炉的具体情况，建议采用三种不同的计算方法。
Three calculation methods have been used to study waxy oil temperature drop after shutdown for both buried pipeline and overhead pipeline.
本文用三种计算方法研究了埋地和架空管线中多含蜡原油管道停输后的温降，并与现场实测结果作了初步比较。
This article describes three types of rib beam calculation of internal force, and compare the three calculation methods to guide the practical work.
本文介绍了三种肋梁内力计算的方法，对三种计算方法作了比较，以供实际工程中选用。
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