The strain field around the crack tip is investigated.
裂纹尖端附近的应变场；
It is caused by the strain effect of crystal induced from jumped space change field.
文中对比现象作了，探讨认为它起因于准击穿时跃变空间电荷场的逆压电效应。
It is caused by the strain effect of crystal induced from jumped space change field.
文中对比现象作了，探讨认为它起因于准击穿时跃变空间电荷场的逆压电效应。
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