For metals, the phenomenon of yielding occurs at the onset of plastic or permanent deformation.

金属的屈服是指塑性或者永久形变开始发生的现象.

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Yield Stress - the stress at which plastic ( permanent ) deformation begins and elastic deformation stops.

屈服应力 - 塑料的重音 ( 永久 ) 变形开始并且有弹性变形停止.

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A practical method for calculating permanent deformation of subgrade soils in flexible pavements is proposed.

提出了一种柔性路面路基土在车辆重复轴载作用下的永久变形的计算方法.

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Permanent deformation ( rutting ) of HMA is one of the major structural failures of flexible pavements.

沥青混合料的永久变形 ( 车辙 ) 是柔性路面体系最重要的几种破坏类型之一.

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Research shows that the shell permanent deformation is creep deformation but not plastic deformation.

分析认为:炉壳的永久变形是由于蠕变变形引起,而不是塑性变形引起.

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