1·Ab initio molecular orbital method has been employed, in this paper, to study the mechanism of the hydrolysis of acetylcholine.
本文对乙酰胆碱水解反应历程进行了从头算分子轨道研究。
2·The calculation results showed that Ab initio had its advantages in the calculating of atom cluster, especially in the aspect of precision and total energy calculation.
计算结果表明：从头计算方法用于原子簇的计算在精度和总能量计算方面有其自身的优势；
3·This paper discusses the quantum chemistry ab initio calculation method and some semi-empirical calculation methods frequently used on the electronic structure.
对电子结构计算中常用的量子化学从头算方法及几种量子化学半经验计算方法进行了讨论。
4·This kind of molecular material has strong nonlinear optical properties, and its electronic structures and dipole moments are calculated by use of density functional theory on ab initio level.
该分子材料具有较强的非线性光学性质，其分子的电子结构和电偶极矩是在密度泛函理论水平上利用从头计算方法得到的。
5·The article elaborates the method of adding pseudo - potential to ab initio calculation to solve problems in multi - electron system.
文章介绍了在从头计算方法中加入赝势来求解多电子体系问题的方法。