它是怎样产生的：纵观历史，疾病使人类的文明生活对其屈服。
How it could happen: Throughout history, plagues have brought civilizations to their knees.
不是所有的材料都会产生应力-应变图，即当载荷增加时显现出开始屈服的迹象。
Not all materials produce stress-strain diagrams on which there is a clear indication of the start of yielding as the load is increased.
结果显示：改性浇铸尼龙材料拉伸屈服后能够产生很大的塑性形变，不会发生脆性破坏。
The results showed that cast nylon modified with laurolactam could produce heavy plasticity deformation without brittle destruction after the tensile yielding.
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