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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；
- She had the sapphire set in a gold ring. 她把那枚蓝宝石镶在金戒指上了。
- The diamond ring dazzled with brilliancy. 这只钻石戒指闪耀夺目。
- She wears a diamond ring on her left hand. 她左手上戴着一枚钻石戒指。
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- I am sorry-she's out. Can you ring again later? 对不起－她出去了。你过些时候再打电话来好吗？
- The boys and girls made a ring round us. 男孩和女孩围着我们站了一圈。
- In a fortnight the House witt be sitting. 两个星期后议院就要开会了。
- Please ring for the attendant if you need anything. 如果需要什么，请按铃找服务员。
- The music was so loud it made my ears ring. 音乐的声音太大了，把我耳朵震得直响。
- The policeman felt that my story didn't ring true. 警察认为我讲的话听起来不可信。
- She wears a ring round her wrist. 她的手腕上戴着一只镯子。
- Ring the correct answer with your pencil. 用铅笔圈出正确的答案。
- A pull on the rope will make the bell ring. 一拉绳子钟就响。
- Diane Witt has not cut her hair for twelve years. 黛安娜?威特已有12年没剪头发了。
- He have scarcely get home when the telephone ring. 他一回到家电话铃就响了起来。
- I'll ring you up some time during the week. 本周的某个时候我给你打电话。
- Mr.Evans : Good morning, Miss Witt. 埃文斯先生：早上好，小姐亚威特。
- The jeweller will engrave the inside of the ring with her name. 珠宝匠将在戒指的内表面上刻上她的名字。
- He can't get his ring off his finger. 他无法指导戒指从手指上拿下来。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
