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- electron pair production 电子对形成
- The number of electron pairs an atom can share with other atoms. 共用电子对数，共价一个原子与其他原子共用的电子的对数
- Two of the three processes, photoelectric effect and pair production, eliminate the photons undergoing interaction. 三种过程中的两种，即光电效应和对产生，使光子受到作用后消失。
- Jentschke of the Deutsches Elektronen Synchrotron (DESY) about the possibility of doing a pair production experiment at Hamburg. 由反物质组成的宇宙到哪里去了？
- This paper analyzes shell electron pair repulsion theory, valence-bond theory and molecular orbital theory on molecular structure of noble gas compounds. 对稀有气体化合物的分子结构分别用“价层电子对互斥理论”、价键理论”和“分子轨道理论”进行了分析处理。
- An axial electron pair meets at right angles with 3 neighboring pairs. 轴向电子对与三个相邻的电子对相交成直角。
- An electron pair. 电子偶电子对
- By calculating the number of va-lence electron shell,we can gain the geometry array of the electronic pair,and then judge the molecular structures. 计算出价层电子对数,得到电子对的几何排布,从而判断出分子的几何构型。
- Another is the Lewis definition (also 1923): An acid (see electrophile) is a chemical that can accept an electron pair from a base (see nucleophile), which they share to form a covalent bond. 另一种理论是路易斯（Lewis）理论（也是在1923年发表）：酸（参阅electrophile）就是能由碱（参阅nucleophile）接受一个电子（electron）对形成一个共价键（covalent bond）的化学物质。
- pair production of particle and its anti - particle 正反粒子对产生
- particle pair production and annihilation 粒子对产生和湮灭
- I bought a pair of tan leather shoes the other day. 前几天我买了双棕褐色的皮鞋。
- electron-positron pair production 电子对产生
- pair production of particle and its anti-particle 正反粒子对产生
- In this model the arrangement of bonds around the cetral atom is considered to depend upon how many valence-shell electron pairs. 在这个模型中，认为围绕中心原子的化学键的排列取决于价层中电子对的数量。
- internal-conversion pair production 内转换偶产生
- pair production attenuation coefficient 电子对生成衰减系数
- In this model the arrangement of bonds around the central atom is considered to depend upon how many valence-shell electron pairs. 在这个模型中,认为围绕中心原子的化学键的排列取决于价层中电子对的数量。
- l electron pair repulsion theory 价层电子对互斥理论
- Symbol of electron pair transfer 电子对转移的符号
