变弱的表层软骨因对正常负荷增加变形而发生裂隙。
The weakened superficial layers of cartilage develop fissures in response to increased deformation by normal loads.
大多数结构材料不仅有弹性，而且在一定限度内具有线性弹性；其变形与负荷成正比。
Most structural materials are not only elastic but within limits, linearly elastic; their deformation is proportional to the load.
通过扫描电镜观测了复合材料冲击断面的形貌，测试了复合材料的负荷变形温度和力学性能。
Impact rupture suface of the composites was observed by scanning electron microscope, and the load deformation temperature and mechanical properties were tested.
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