conditional sum meaning in English

条件和

Moreover still the utilization program has been imitated the resisted fire ability that the ordinary flat board was netted to put up , and analyses prestressing force and nets the resisted fire property putting up by way of the contrast , and has found that the prestressing force dull and stereotypedly nets the resisted fire weakness putting up , for prestressing force nets frame application has created the conditional sum basis that is suitable three corresponding calculator programs of establishment all use the model have been verified their correct nature
另外还利用程序模拟了普通平板网架的抗火能力，通过对比来分析预应力网架的抗火特性，发现了预应力平板网架的抗火弱点，为预应力网架的应用创造了适用的条件和依据。编制的三个对应计算程序，都利用模型验证了它们的正确性。实例模型采用了实际的试验模型，从而为初期计算数据提供了有效验证。