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- 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
- The computer contains a large number of electronic switches. 计算机内包含大量电子开关。
- The number of protons is equal to number of electrons. 质子数等于电子数。
- An atom normally contains equal numbers of electrons and protons. 原子在正常情况下含有数目相等的电子和质子。
- The combining capacity of an atom or a radical determined by the number of electrons that it will lose, add, or share when it reacts with other atoms. 化合价，原子价原子或原子团与其它原子反映时由所失、增加成共享的电子数目决定的化合能力
- The number of fish in coastal waters has decreased. 沿海鱼的数量已减少了。
- Having equal numbers of electrons or the same electronic configuration. 等电子的有相同的电子数目的或有相同的电子构型的
- A number of new hats were on parade at the wedding. 在婚礼上见到有些人戴著新式的帽子。
- A number of satellites are now circling the earth. 一些人造卫星现在正环绕地球飞行。
- The amount of scattering will thus be proportional to the number of electrons. 于是散射辅射的量将与电子数成正比。
- I seriously question a number of your assertions. 对你所坚持的说法，有几点我甚为怀疑。
- A considerable number of guests have come. 相当多的客人已经来了。
- A number of possibilities come to mind. 我脑里出现了好几种可能性。
- Only a limited number of places are available. 只有少数地方可供使用。
- By extension, an array of any number of dimensions. 广义来说，矩阵可以是任意维数的数组。
- The number of day lose through strike have fall. 因罢工而失去的工作日减少了。
- The number of your finger is ten. 你双手手指的总数是10。
- This served to create output pulses proportional to the number of electrons emitted. 这个装置用于产生与发射电子数成正比的脉冲输出。
- Each tiny atom of any element contains a nucleus around which rotate a certain number of electrons . 任何元素每个微小原子都含有一个周围有一定数量的电子绕其旋转的原子核。
- A number of (ie some) problems have arisen. 已经出现了一些问题。
