1·Structure resistance and effect are affected by lots of unascertained factors in structure reliability analysis.
在结构可靠性分析中，结构抗力和作用效应受许多未确知因素的影响。
2·Study result showed that it is feasible in theory and reliable on conclusion using unascertained mathematical theories to simulate river water quality and evaluate its risk.
实例研究表明，以未确知数学理论研究河流水质风险问题，理论上是可行的，评价结果是可信的。
3·In the paper, I Study mathematical treatment method of unascertained information.
本文研究未确知信息的数学处理方法。
4·Unascertained normal subgroup is also studied.
并且研究了未确知正规子群。
5·Forecast method of unascertained clustering to predict mining induced surface subsidence is optimized.
对未确知聚类预测法进行优化，并将其应用于开采地面沉陷的预测研究。