The effects of tempering weld-pass treatment on toughness of HAZ of X80 pipeline steel were studied by the technique of welding thermal simulation and the method of microscope analysis.
采用焊接热模拟技术和显微分析方法，研究了回火焊道热处理对X80级管线钢焊接热影响区韧性的影响规律。
The analytical skill of structural analysis can be enhanced by this method which combines dynamic simulation analysis, thermal analysis and static analysis.
通过动力学分析、热分析和静力分析的有机结合，对该类型结构计算进行了有益补充。
Performance of chemical additives has been evaluated from thermal stability, viscosity reducing, oil fraction analysis and physics simulation test.
从热稳定性、降粘性能、原油馏分分析、物理模拟试验方面对化学添加剂进行了性能评价。
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