When the distribution is unknown, it is supposed that all of the unloaded fuzes are subjected to the same maximum stress.

• 当应力分布规律未知时,假定所有被旋卸的引信都承受了同一最大应力,这样根据应力-强度干涉模型即可方便地求出其可靠度或最大许用扭矩。