The key issue of progressive collapse (PC) design method is to determine the PC resistance demand of the structures with members removed due to accidental action.

结构抗连续倒塌设计方法的关键是确定因偶然作用导致局部构件失效后剩余结构的连续倒塌抗力需求。

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Abstract :The key issue of progressive collapse (PC) design method is to determine the PC resistance demand of the structures with members removed due to accidental action.

摘要 ：结构抗连续倒塌设计方法的关键是确定因偶然作用导致局部构件失效后剩余结构的连续倒塌抗力需求。

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They also devised technologies—permissive action links, go codes, and redundant command-control links—that minimized the chance of accidental or unauthorized launches.

他们还采用各种技术，例如行动授权环节，密码和多保险的指挥控制环节，来减少意外或未经授权发射的可能性。

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Further baton rounds and two more live rounds were discharged by officers, resulting in Allwright returning fire in what was believed to have been an accidental "reflex" action.

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Recording a verdict of accidental death, he said if the family wanted to take further action they should seek advice.

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Stand-in keeper Stephen Robertson joined the action two minutes before the break after Allan Ferguson was involved in an accidental collision with team mate Danny Griffin and Rangers skipper Lorenzo Amoruso.

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