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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；
- A turbulence closure model and its boundary condition should be ch osen according to the researching problems and the model should be calibrated by observation and experiments. 对于湍流模型的使用提出针对具体问题选择的原则，复杂的并非最优的。
- conditional moment closure model 条件矩封闭模型
- The DNS statistical data are used to validate the closure models in the correlation-moment equation of Reynolds-averaged Navier-Stokes (RANS) modeling. 对标量关联量方程RANS模拟各项的封闭模型进行了后验性检验。
- Crack closure model in residual stress field of welding 焊接残余应力场中裂纹闭合模型
- The railway is under threat of closure. 那条铁路有停止运营的迹象。
- 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。
- 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。
- She was studying to build up her algebra. 她在学习以提高自己的代数水平。
- Standing by him was a model worker. 站在他旁的是一位劳动模范。
- Are you stuck over your algebra? 你的代数题做不下去了吧？
- I think I can get that special model for you. 我想我可以为你找到那种特别的型号。
- He finally got the answer to the algebra problem. 他终於算出了这道代数题的答案。
- She has been held up as a model worker. 她被推举为模范工作者。
- He showed us a model of the new office building. 他给我们看了新办公楼的模型。
- He taught Tom how to make a model airplane. 他教汤姆作模型飞机的方法。
- John is repairing his model plane at his leisure. 约翰不慌不忙地修理着他的航模。
- The old sailor chipped out a tiny model boat. 那名老水手一点儿一点儿地削出一个小船模型。
- algebraic closure 代数闭包
