从分析路面温度场入手，研究了多孔混凝土基层的温度翘曲应力和温度胀缩应力，据此分析了多孔混凝土基层接缝的设置依据和缝间距离。
Started with the analysis of temperature field, the temperature-warping stress and temperature contraction stress of porous concrete are studied, and the location of joint are discussed.
介绍了汽车消声器纵缝咬边胀合技术及其咬边芯模机构的设计计算。
Expanding and closing technique of core-die of longitudinal seam occlusion machine for automobile silencer and design calculation of such mechanics have been introduced.
根据FWEC管式空气预热器技术规范对管子—管板胀接的要求，对有缝电阻焊管胀接进行工艺试验。
In this paper, to meet the expending requirements of technical specification for FWEC Tubular Air Heaters, the expending procedure test for the ERW tube was performed.
根据FWEC管式空气预热器技术规范对管子—管板胀接的要求，对有缝电阻焊管胀接进行工艺试验。
In this paper, to meet the expending requirements of technical specification for FWEC Tubular Air Heaters, the expending procedure test for the ERW tube was performed.
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