Only nucleophilic substituted product cyclopropane ( 3) was formed in absence of iron catalyst.

  • 不加催化剂,加热回流反应得到分子内亲核取代反应产物环丙烷化合物(3)
  • 来源:互联网摘选更新时间:2025-01-20 12:17:03

  • 重点词汇
  • substitutedv.代替,替换,代用( substitute的过去式和过去分词 );做…的代理人,接替;
  • productn.产品;产物;乘积;
  • ironn.铁器,铁制品;熨斗,烙铁;坚强;脚镣;
  • catalystn.<化>触媒,催化剂;〈比喻〉触发因素;促进因素;〈口〉有感染力的人;
  • nucleophilicadj.亲核的,亲质子的;
  • wasv. 用来表示某人或某物即主语本身,用来表示某人或某物属于某一群体或有某种性质( be的过去式 );在,存在;不受干扰;
  • absence of没有
  • formedadj.成形的,成形加工的;
  • 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
  • 相关例句
1、

Perhaps , our hours in love have wings; in absence crutches.

爱情的时光长出了翅膀; 离别时, 它们是我们的精神支柱.

互联网摘选

2、

What happens in absence of a good , complete final report?

欠缺一份充份完整的结案报告会 如何 ?

互联网摘选

3、

He could not account for the absence from school that day.

他无法说明那天缺课的原因.

互联网摘选

4、

He could not account for his absence from school.

他无法说清楚为什么旷课.

互联网摘选

5、

This clause provides against any unauthorized absence from duty.

这一条条文禁止任何未经批准的缺勤.

互联网摘选

6、

Have you any excuse to offer for frequent absence from collective practice?

你经常不参加集体训练有什么理由解释 吗 ?

互联网摘选

7、

He could not account for his absence from classes.

他说不出缺课的原因.

互联网摘选

8、

Consequently, his long illness led his absence from school.

因而, 长期的疾病造成他的缺课.

互联网摘选

9、

During his absence from Guangzhou his co-workers did a lot of work.

他不在广州的这些日子里,他的同事做了不少工作.

互联网摘选

10、

The teacher called Tom to account for his repeated absence from class.

老师要求汤姆说明他一再缺课的理由.

互联网摘选

11、

His absence from this office will be a great loss to us.

他离开这里,将是我们的一大损失.

互联网摘选

12、

His excuse for his absence from classes is not valid.

他缺课的理由是站不住脚的.

互联网摘选

13、

He viewed his son's absence from school very badly.

他对儿子缺课看得十分严重.

互联网摘选

14、

I wrote an excuse for my absence from school.

我写了一张请假条,说明缺课的原因。

provided by jukuu

15、

The teacher demanded an explanation for his absence from class.

老师要他对缺课作出解释.

《简明英汉词典》

16、

You can admit it& this is not about making money.

您就直接承认吧。

互联网摘选

17、

I mean, you have to admit it's a good one.

我是说,你必须承认这个理由很好。

provided by jukuu

18、

Admit it! You were terrified!

承认了吧!你吓坏了!

《牛津高阶英汉双解词典》

19、

What he said thrust home the problem, they had to admit it.

他的话切中问题的要害,他们不得不承认这一点。

互联网摘选

20、

I must admit it irks me to see this guy get all this free publicity

我必须承认,看到这个家伙不费一分一毛就这样大出风头,我心里就来气。

《柯林斯高阶英汉双解学习词典》

  • 今日热词
  • 热门搜索

简答网英语词典(dict.jiandongshicai.cn)为您提供在线翻译英语词典单词大全英译汉汉译英等英语服务!可按单词字数词义分类查询。支持lj:关键词格式查询例句。

用户反馈
请选择反馈类型(可多选):
您的联系方式:(如需回复请填写联系方式)
反馈内容:
提交成功 小编会尽快处理
回到顶部
点击反馈