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- The fortress was the nucleus of the ancient city. 这城堡是这座古城的中心。
- The protoplasm outside the nucleus of a cell. 细胞质，细胞浆细胞分子外部的细胞质
- The outermost electron is shielded from the nucleus. 原子核对最外层电子的作用受到屏蔽。
- The transmitter was pulsed by an electron tube. 电子管使发射器产生脉冲波。
- These 1000 books will form the nucleus of the new school library. 这一千本书将构成学校新图书馆藏书的基础。
- The atomic center is the nucleus, and the electronics winds revolve it. 原子的中央是原子核，电子绕着它旋转。
- 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
- A proton or a neutron, especially as part of an atomic nucleus. 核子质子或中心，尤指作为原子核的一个组成部分
- nucleus electron 核内电子
- The colorless, liquid component of the cell nucleus. 细胞核液细胞核中无色的液体成分
- The path of a body in a field of force surrounding another body; for example, the movement of an atomic electron in relation to a nucleus. 力场轨道一物体在力场中环绕另一物体运行路径，例如电子在原子核周围的运动
- Let us think of an electron as a wave extending in a circle around the nucleus. 我们不妨把电子看成是一个绕原子核展开的波。
- 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
- Existing or acting outside the nucleus of an atom. 原子核外的出现或行动于原子核外的
- 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
- An atom contains a tiny heavy nucleus. 一个原子含有一个微小而重的核。
- A nucleus can have only one Y-chromosome. 一个核可以仅有一个Y染色体。
- The most important part of the cell is the nucleus. 细胞中最重要的部分是细胞核。
- Every nucleus lives in splendid isolation. 原子核处于极佳的隔离状态。
- The family is the nucleus of the community. 家庭是社会的核心。
