It introduces a concept of computer maintenance management systems (CMMS), the application software - MP2 and its functions.
介绍计算机维修管理系统(CMMS)的概念，以及CMMS的一个具体实施软件—mp2的功能。
2
The intermolecular interaction energy is calculated with MP2 electron correlation correction, basis set superposition error (BSSE) correction and zero point energy (ZPE) correction.
经MP2电子相关和基组叠加误差（BSSE）以及零点能（ZPE）校正，求得分子间相互作用能；
3
The result shows that MP2, QCISD, B3LYP can gain the gauche and anti conformers of oxalyl iodide, which is in good agreement with configuration of oxalyl halides in experiment.