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- An electron pair. 电子偶电子对
- 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。
- The transmitter was pulsed by an electron tube. 电子管使发射器产生脉冲波。
- An electron tube having a cathode and an anode. 电子二极管有一个阳极和一个阴极的电子管
- 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
- Helen became an electronic engineer. 海伦成了一名电子工程师。
- An electron with a negative charge, as contrasted with a positron. 电子带有负电荷，与正电荷相反的电子
- Attempts to split an electron always fail. 企图分裂电子的尝试总是失败的。
- The machine is operated by an electronic pulse. 这台机器由电子脉冲信号操纵。
- 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 from one of the atom shells is ejected. 电子从原子的某一壳层中被弹射出来。
- An electron or an atom behaves in some ways as though it were a group of waves. 电子或原子的行为在某些方面好像是一组波。
- An electronic device amplified the speaker's voice. 电子设备放大了演讲人的声音。
- An electron tubewith a photosensitive cathode. 光电管具有感光的阴极电子管。
- Its a black hole about the size of an electron. 是一个只有电子大小的黑洞。
- An electron tube or a vacuum tube. 电子管或真空管。
- To vary(electron velocity) in an electron beam. 调制在一个电子束中改变（电子速率）
- One says "I think I just lost an electron. 一个说：“我想我刚才失去了一个电子。”
- An electron tube with a photosensitive cathode. 光电管具有感光的阴极电子管
- 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。
