pnet meaning in English

后外周性神经上皮瘤
右额颞顶原始神经外胚层肿瘤
周围神经上皮样瘤

For spatial , ideal elasto - plastic girder - pane structure system , using the stochastic finite element method , the static response of structural system is analyzed . taking redistribution of internal forces into account , safety margin functions of failure modes are established . using the advanced branch - and - bound method , the significant failure modes are identified , and the reliability of structural system is evaluated by pnet method
对空间理想弹塑性梁板体系结构，采用随机有限元计算结构系统的响应量；考虑内力重新分配，建立失效模式的安全余量方程，用验算点法计算失效模式安全余量的可靠性指标；用改进的分枝限界法，寻找主要失效模式：然后用pnet法计算结构系统的可靠性指标(或失效概率) 。