以下为句子列表：
英文: Firstly, the strain gauge method was used to measure the time difference of stress wave passing through two gauges adhered on the surface of test piece and also their main frequencies Secondly, a 3-component dynamometer was used to measure the resonant fr
中文: 本研究旨在研发两种新的应力波计测技术，其一为利用应变规来测定两标点间之应力波传递时间差及试材之共振频率，藉以计算试材之音速及动弹性系数，其二为利用三向动力计来测定试材之共振频率。
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英文: In accordance with the characteristics of repeated impact load, and from the aspects of stress wave transmission, repeated impact wear, hardening and softening of repeated impact and plastic deformation of repeated impact, an experimental study on partial
中文: 摘要根据多次冲击载荷的特性，从应力波传播、多冲磨损、多冲硬化与软化和多冲塑性变形方面，对带有激光熔覆层试样在多冲冲击载荷下的部分力学行为进行了试验研究。
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英文: The result shows that under the effect of repeated impact load, the stress wave produces reflection in the metallurgical junction plane between coating and basal body, and forms stretch wave causing longitudinal split and angle split of coat; the microcos
中文: 结果表明：在多冲载荷作用下，应力波在涂层和基体的冶金接合面发生反射，形成拉伸波造成涂层的纵裂和角裂；在涂层表面由于应力集中，涂层表面发生微观点蚀和深层剥落；冲击载荷能量的积累，造成涂层试样硬度变化和塑性变形。
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