Objective: Study the principle and practicality of mechanism analysis on organic reactions by EPPM.
目的：研究用电子对推动法(EPPM)解析有机反应机理的原理及实用性。
2
In antique agricultural books there was the recordation about the variety and use principle of organic fertilizers.
古农书保存了大量的有关有机肥的种类、积制、施用方法及施肥原则等记载。
3
The characteristics of the organic semiconducting materials and principle of the first electrically pumped solid state organic laser at the Bell laboratory are outlined.