In 1911, M. Dehn gave three fundamental problems in combinatorial group theory: word problem, conjugacy problem and isomorphism problem.

  • 1911年,M.Dehn提出了组合群论的三个基本问题,即:字问题、共轭问题、同构问题。
  • 来源:互联网摘选更新时间:2025-01-20 18:53:56

  • 重点词汇
  • dehn[人名] 德恩;
  • inprep. 在里面;在(某范围或空间内的)某一点;在(某物的形体或范围)中;在…内;在…中;进入
  • fundamentaladj.基础的;根深蒂固的;必须的;基频的;基音的;
  • groupn.组,团体,集团;群,批;(雕塑等的)群像;(英美的)空军大队;
  • wordn.单词;字;信息;话语;言语;歌词;诺言;消息;命令;短时间的谈话;
  • mn. 英语字母表的第13个字母;
  • isomorphismn.同形,类质同像;同晶型;同形性;
  • problemn.问题;习题;
  • 相关例句
1、

Dehn Surgery on Knots with Tunnel Number One

洞数为1的纽结上的Dehn手术

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2、

Hyperbolic Groups, Automatic Groups and Dehn Functions of Groups

双曲群,自动机群与群的Dehn函数

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3、

A female enlisted person in the armed forces. Youths under eighteen cannot muster in.

在陆海空三军中被征召的女性人员。年龄不满18岁的青年不能征召入伍。

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4、

Palin is the first female and the youngest person to be elected governor in Alaska, a huge and remote state that is home to key oil and gas reserves.

阿拉斯加是远离美国本土的一个大州,蕴藏着丰富的石油和天然气资源。佩林是阿拉斯加最年青的州长,也是那里的第一位女州长。

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5、

An adult female person ( as opposed to a man).

成年女性(对立面是男人)。

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6、

A miscellaneous playwright is while molding female person image, the subconscious ground was divided into the woman of good family the single young girl with married women two category type.

元杂剧作家在塑造女性人物形象时,下意识地把良家妇女分成了未婚少女与已婚妇女两种类型。

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7、

Through the efforts of organization and female high-level person, accelerating the career development of female high-level person, then help they achieve career success.

这样通过组织和女性高层次人才的共同努力,加快其职业生涯发展,更快地达到职业成功。

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8、

Female doctrine person Simore · de · Beauvoir has a well-known saying" one person is not being born as a female, but becoming a female ". She thinks that the woman is not" natural formation", but is to be constructed by society and culture.

女性主义者西蒙·德·波伏娃(Simore·de·Beauvoir)有句经典名言,一个人不是生而为女性,而是经过社会活动磨练成女性的,她认为,女人不是自然形成的,而是被社会和文化建构的。

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9、

A female enlisted person in the armed forces.

在陆海空三军中被征召的女性人员。

provided by jukuu

10、

I can tell you it's a young person. A young female person.

我可以告诉你们是个年轻人一位年轻女性

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11、

The hero's sex changing from male to female, combining male and female in one person until her writing after marriage, all these show clearly that Woolf is to follow the writing theory of dual-sex in a body advanced by herself.

其主人公由男到女的变性,集男女于一身,直到婚后她又可以写作,都清楚地说明伍尔夫是遵循她自己提出的双性同体这一写作理论的。

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12、

A female person who is a fellow member ( of a sorority or labor union or other group).

是同会(妇女联谊会、工会或其它团体)会员的女性。

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13、

The complex [ Pt ( DEHS) 2Cl4] has been prepared by extraction method and characterized by elemental analysis, molar conductance, differential thermal and thermogravimetric analysis as well as infrared spectra. The molecular structure of the complex has been determined by four-circle X-ray diffractometer.

用萃取法合成了[Pt(DEHS)2Cl4],对配合物进行了元素分析,摩尔电导,差热一热重和红外光谱等测试并经X射线单晶结构分析确定了配合物的结构。

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14、
15、

There are three peak in death of highway traffic accidents: The first peak is that the patients deid within an hour after trauma 159 cases were 50.3% in mortality.

陆路交须事故伤的死亡有3个高峰:第1个高峰在伤后1小时内死亡,150例,占50.3%;

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16、

Draw eyes, ears, and nose. Draw a cat on the paper. Draw the rest of the body. Draw three people.

画三个人画出眼睛,耳朵和鼻子在纸上画只猫把身体的其他部位画出来

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17、

The advertiser may draw little cartoon eyes, arms, and legs on the cans of cleaning powder and have the resulting figures scrub the sink.

在去污粉罐上,广告商用卡通手法印上眼睛、胳膊和腿脚,并让卡通人物摆出擦洗水池的姿势。

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19、

BLACK-AND-WHITE DRESSES Taylor Swift and Maria Menounos both pick dresses that flatter their figures and draw the eyes up, thanks to the stark contrast between the yoke and the bodice.

黑白相间的连衣裙泰勒•斯威夫特和玛丽娅•曼努诺斯都选择了突显她们身材的连衣裙,并画了眼睛,多亏肩处和上身的鲜明对比。

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20、

Eyebrows draw attention to the eyes...

眉毛把注意力引向了眼睛

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