运用轮轨相互作用原理，研究轮轨磨耗伤损的机理。
Based on the principle of wheel-rail interaction, the mechanism of the abrasive wear damage of wheels and rails is studied.
目的：探讨颅脑损伤损伤程度及预后与心电图变化的关系。
Objective:To grope for the relation between the electrocardiogram's change and craniocerebral trauma's grade and prognosis.
结果表明，掉块缺陷的形成是由于钢轨滚动接触疲劳伤损所致。
The result shows that rolling contact fatigue failures caused swap block defects of rail.
踏面斜裂纹及断口的宏观形貌和理化检验与分析表明，踏面斜裂纹伤损属于滚动接触疲劳裂纹伤损类型。
The macro profile and physicochemical examination of the tread oblique crack shows that the crack falls into the category of rolling contact fatigue type.
踏面斜裂纹及断口的宏观形貌和理化检验与分析表明，踏面斜裂纹伤损属于滚动接触疲劳裂纹伤损类型。
The macro profile and physicochemical examination of the tread oblique crack shows that the crack falls into the category of rolling contact fatigue type.
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