The effects of case parameters on the distribution of elastic-plastic stress hi railhead are analyzed including lateral displacement, gross rail load on axle and constrained conditions of rail bottom.

对于工况参数，主要分析了横移量、轴重和轨底约束对轮轨滚动接触应力场的影响。

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Argon-blown pocket block is a supportive new and hi-tech product developed simultaneously with bottom-blow argon vent brick.

吹氩座砖是与底吹氩透气砖同步开发的配套高新技术产品。

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He was wearing a grey bomber-style jacket with black lining and hood, light blue bleached jeans that were ripped at the bottom and grey hi-top trainers when he went missing.

BBC: Mother makes plea over missing son Ross Ramsay