cause of invalidity

英 [kɔːz ɒv ˌɪnvəˈlɪdəti]

美 [kɔːz əv ˌɪnvəˈlɪdəti]

无效原因

Boundary-processing is crucial to EMD process in HHT, whose failure may cause the invalidity of the decomposed IMF due to boundary fluctuation and the whole data invalidity.
在HHT方法中，边界处理问题是经验模态分解过程中的核心问题，处理不好会引起数据端部的飞翼，进而污染整个数据，使分解的固有模态函数失效。
The cause of the invalidity of the HRR theory when it is applied to elastic-plastic materials in the plane strain case is analyzed and discussed, a dual-parameter fracture criterion is suggested for this case.
对于在平面应变条件HRR理论应用于弹塑性材料失效的原因进行了分析和讨论，并提出了在此情况下适用的双参数断裂判据。
It is proved that thermal fatigue is the main cause of the invalidity of the package. Therefore, it is significant to research the reliability of solder ball under the thermal cycle.
实践证明热作用是芯片封装组件失效破坏的主导因素，因此热循环条件下的焊点可靠性研究有着非常重要的意义。