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- He proved there is a natural isomorphism:where k is a perfect field of characteristic p, W(k) is the Witt ring of k, K is the fractional field of W(k), K|- is a fixed algebraic closure of K, K~(cyc) is the exension of K by joining all roots of unity. 是K的一个固定的代数闭包，K~(cyc)是K添加所有的单位根。 在我们的研究中，特征0的问题与特征p的问题经常是相互转化的，如在第一部分，我们必须将特征p的域提升至特征0；
- The railway is under threat of closure. 那条铁路有停止运营的迹象。
- The closure of the large factory made many workers live in idleness. 那家大工厂倒闭，使许多工人失业。
- The boy can't figure out the algebra problems. 这个男孩做不出这道代数题。
- We've learned algebra in middle school. 我在中学就学过代数学。
- She was studying to build up her algebra. 她在学习以提高自己的代数水平。
- Are you stuck over your algebra? 你的代数题做不下去了吧？
- He finally got the answer to the algebra problem. 他终於算出了这道代数题的答案。
- algebraic closure 代数闭包
- Police reported the closure of the road/that the road was closed. 警方宣布那条道路禁止通行。
- algebraic closure of a field 域的代数闭包
- He was the only one to speak out against the closure of the hospital. 只有他一人直言不讳地表示反对关闭医院。
- separable algebraic closure 可分代数闭包
- Serious lack of circulating fund forced the closure of the company. 公司因严重缺乏流动资金而被迫关闭。
- algebraic closure operator 代数闭包算子
- Lack of money forced the closure of the company. 公司因缺钱而被迫关闭。
- Tensor algebra is tied to coordinates. 张量代数则离不开坐标系。
- The strike forced the closure of the factory. 罢工迫使该厂关闭。
- The branch of algebra that deals with quadratic equations. 二次方程式论处理二次方程式的代数学的分支
- The threat of closure affected the workers' morale. 工厂行将倒闭一事影响着工人的士气.
