对硝基芳烃类衍生物进行半经验分析轨道MNDO计算，求得全优化几何构型和电子结构。
Semiempirical calculations at the MNDO level were performed on nitroaromatic compounds to obtain fully optimized geometries and electronic structures.
首先从预定的广义尾流入手，并引入尖涡涡核作用的半经验修正，对旋翼的自由尾流进行计算分析。
Beginning with the prescribed wake model, a Semi Empirical Correction for the vortex core effect on rotor wake is made and free wake calculation is carried out.
根据理论分析和实验结果得到了预测过渡沸腾换热的半经验公式。
A prediction correlation of transition boiling heat transfer was obtained by means of theoretical analysis and by using experimental data.
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