24小时热门版块排行榜    

查看: 403  |  回复: 7
当前主题已经存档。
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

jut215

银虫 (小有名气)

[交流] 翻译一句话

机器翻译免谈,翻译为英文

本论文对Wittig 反应后处理做了改进,利用副产物三苯基氧磷易结晶的特点,先用重结晶的方法除去大部分副产物三苯基氧磷后,再用柱层析色谱纯化产物。我们发现该方法不但硅胶和溶剂用量较少,而且效果很好,具有一定的环保和经济意义。
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

yunning

铁虫 (小有名气)

★
jut215(金币+1,VIP+0):2 12-2 17:33
副产物:by-product 应该加上。
用重结晶的方法:With the re-crystallization method
呵呵 自己认为的
唐僧骑马咚哩个咚
5楼2009-11-28 11:08:27
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 8 个回答

zcy86520

铁杆木虫 (著名写手)

telomerase(金币+0,VIP+0):机译请注明,否则扣分!!! 警告!!! 11-28 19:05
In this paper, post-processing of the Wittig reaction has been improved by using 3-phenyl-product characteristics of paraoxonase easy to crystallize, first used the method to remove most of recrystallization product of 3-phenyl-paraoxon after, and then column chromatography purified products . We found that the method is not only relatively small amount of silica gel and solvent, but also a good effect, with certain environmental and economic significance.
2楼2009-11-27 18:13:35
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

zoufeng

银虫 (初入文坛)

telomerase(金币+0,VIP+0):机译请注明,否则扣分!!! 警告!!! 11-28 19:05
In this paper, post-processing of the Wittig reaction has been improved by using 3-phenyl-product characteristics of paraoxonase easy to crystallize, first used the method to remove most of recrystallization product of 3-phenyl-paraoxon after, and then column chromatography purified products . We found that the method is not only relatively small amount of silica gel and solvent, but also a good effect, with certain environmental and economic significance.
3楼2009-11-27 21:53:47
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

syh9288

捐助贵宾 (著名写手)

海军上将

楼上的两位怎么一样呀 难道心灵相通
人生如梦,一樽还酹江月
4楼2009-11-27 22:05:02
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
普通表情 龙 兔 虎 猫 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[硕博家园] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +6 zSbvVX9JFl9J 2026-11-09 9/450 2026-11-13 11:13 by Equinoxhua
[硕博家园] 售SCI一区T0P文章,我:8O.55.1.O.54,科目全,可伽急 +5 C6CRn66RYYXS 2026-11-10 9/450 2026-11-13 11:02 by Equinoxhua
[考博] 售SCI一区文章,我:8.O.55.1.O.54,科目齐全,可伽急 +4 TgvkbZZl9tqB 2026-11-11 6/300 2026-11-12 12:42 by ECLTXnJnRSXf
[硕博家园] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +4 cdqGD6ftHmbl 2026-11-11 4/200 2026-11-12 12:26 by ECLTXnJnRSXf
[考研] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +4 Z7qfCsdIiD1T 2026-11-11 5/250 2026-11-12 11:44 by HajghKOMynmz
[考博] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +3 Z7qfCsdIiD1T 2026-11-10 5/250 2026-11-12 11:25 by HajghKOMynmz
[考研] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +5 czAiolzR0IJC 2026-11-10 6/300 2026-11-12 11:03 by HajghKOMynmz
[考研] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +7 czAiolzR0IJC 2026-11-10 9/450 2026-11-12 11:00 by HajghKOMynmz
[考博] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +3 G2rhSvqvhNzl 2026-11-10 5/250 2026-11-12 10:49 by HajghKOMynmz
[硕博家园] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 +4 G2rhSvqvhNzl 2026-11-10 6/300 2026-11-12 10:49 by HajghKOMynmz
[公派出国] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +4 C6CRn66RYYXS 2026-11-10 8/400 2026-11-12 10:27 by HajghKOMynmz
[公派出国] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +5 YHiw1gou1Eda 2026-11-10 6/300 2026-11-12 10:14 by HajghKOMynmz
[硕博家园] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +8 cqv1zKnzd7hr 2026-11-09 12/600 2026-11-12 09:32 by HajghKOMynmz
[公派出国] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +4 Z7qfCsdIiD1T 2026-11-10 6/300 2026-11-12 07:09 by 9fOTqj074tIg
[教师之家] 售SCI文章,我:8O5.5.1.O.54,科目齐全,可+急 +4 C6CRn66RYYXS 2026-11-10 4/200 2026-11-12 06:03 by 9fOTqj074tIg
[考研] 售SCI一区文章,我:8.O.55.1.O.54,科目齐全,可伽急 +6 FChKX8meu1ds 2026-11-09 9/450 2026-11-12 05:19 by 9fOTqj074tIg
[考研] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +5 cqv1zKnzd7hr 2026-11-09 8/400 2026-11-12 05:08 by 9fOTqj074tIg
[硕博家园] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 +6 0TEMgxdT1eIw 2026-11-09 9/450 2026-11-12 04:57 by 9fOTqj074tIg
[考研] 售一区SCI文章T0P,我:8O.551.O54,科目全,可十急 +3 Z7qfCsdIiD1T 2026-11-10 4/200 2026-11-12 02:23 by 9fOTqj074tIg
[文学芳草园] 厉娜 +3 张丹枫1991 2026-11-09 5/250 2026-11-09 16:53 by 张丹枫1991
信息提示
请填处理意见