在反应堆物理设计和分析时，经常要进行微扰计算，以快速分析堆芯中子截面扰动下反应性的变化量。
Perturbation calculation will be required to rapidly determine the changes of reactivity caused by core neutron cross sections perturbation in reactor physics design and analysis.
从而用微扰分子轨道理论半定量地解释了脂肪族的游离基取代和芳香族的游离基取代反应的反应性和选择性。
The reactivities and selectivities of aliphatic and aromatic free-radical(substitution)reactions were explained semi-quantitatively by the perturbation molecular orbital theory.
候选网自动搜寻器用所有的基因去计算被扰的反应径或网的显著性，以消除因忽微阵实验中的非显著差表现基因而遗失任何重要资讯的情形。
AutoSCAN USES all genes to compute the significance of perturbed pathways or network to eliminate the loss of any important information about insignificant genes in microarray.
应用推荐