To eliminate the residual stress of aluminum alloy pre-stretching board, an elastic-plastic finite element model was developed to simulate the vibratory stress relief (VSR) process.

为消除铝合金预拉伸板中的残余应力，采用弹塑性有限元法对振动时效消除残余应力进行数值模拟。

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The emergence of the Ugandan rebel LRA in the south is stretching thin both relief agencies and Central African Republic security forces.

VOA: standard.2009.08.27

For on-the-spot relief of a cramp, the American Academy of Orthopaedic Surgeons recommends gently stretching and massaging the cramped muscle until the cramp goes away.

CNN: What causes muscle cramps?