24小时热门版块排行榜    

北京石油化工学院2026年研究生招生接收调剂公告
查看: 345  |  回复: 2
当前主题已经存档。

jim5362

金虫 (正式写手)

[交流] 求翻译

松香是由一系列氢化菲结构的三环二萜一元树脂酸组成。我国年产松香70多万吨,居世界第一位。
    杂环化合物是碳环化合物的环链上含有一个或多个非碳原子的有机化合物。在已知的有机化合物中,杂环化合物的数量占65% 以上,其主要是含氮、氧、硫等原子的系列衍生物,广泛应用于农药、香料加工、医药、化工等社会生活领域。松香树脂酸结构中羧基和菲环经改性可得松香基杂环化合物,主要有酯、喹啉、咪唑、呋咱、吲哚、咪唑啉等系列衍生物,并应用于化工、生物农药及医药等领域。

[ Last edited by jim5362 on 2009-12-5 at 20:14 ]

» 猜你喜欢

Everysteptowardsyourdreamtodayisastepawayfromyourregrettomorrow!
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jim5362

金虫 (正式写手)

怎么没人帮忙哦?
Everysteptowardsyourdreamtodayisastepawayfromyourregrettomorrow!
2楼2009-12-05 21:52:17
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

goodtimega

铁杆木虫 (著名写手)

★ ★ ★ ★ ★ ★ ★ ★ ★ ★
jim5362(金币+10,VIP+0):thank you very much 12-5 22:52
A series of hydrogenated rosin is composed of tricyclic diterpene resin acid. China's annual output of rosin more than 70 million tons ranks first in the world.

Heterocyclic ring care compounds of carbon chain that contains one or more non-carbon atoms in organic form. In the known organic compounds, heterocyclic compounds account for more than 65%, which are mainly nitrogen, oxygen, sulfur atoms such as a series of derivatives widely used in pesticides, spice processing, pharmaceutical, chemical, and other social spheres of life. Rosin resin acid ring structure through the modification of carboxyl group and the philippine through available rosin-based heterocyclic compounds. They are mainly esters, quinoline, imidazole, furazan, indole, and imidazoline derivatives, which have desired applications in chemical, biological pesticides and medicine and other fields.
3楼2009-12-05 22:16:51
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 jim5362 的主题更新
普通表情 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
[考研] 复试调剂 +6 范根培 2026-04-04 6/300 2026-04-04 14:27 by 土木硕士招生
[考研] 283分求调剂 +4 试试看呗 2026-04-04 4/200 2026-04-04 13:00 by tujia213
[考研] 268求调剂 +8 你好tg 2026-04-03 9/450 2026-04-04 05:08 by gswylq
[考研] 265求调剂 +17 林深温澜 2026-04-01 20/1000 2026-04-04 01:09 by userper
[考研] 282求调剂 +20 ycy1201 2026-04-01 22/1100 2026-04-04 00:42 by userper
[考研] 考研调剂 +3 15615482637 2026-04-03 3/150 2026-04-03 22:50 by ms629
[考研] 一志愿江南大学085501机械工程专硕326分,本科佳木斯大学 +4 顾若浮生 2026-04-03 8/400 2026-04-03 22:31 by zhq0425
[考研] 数二英二348求调剂 +4 hxdzj1 2026-04-03 5/250 2026-04-03 21:25 by zhq0425
[考研] 0835学硕299求调剂 08大类可接受 +3 useryy 2026-04-03 3/150 2026-04-03 20:23 by zhq0425
[考研] 070300一志愿211,312分求调剂院校 +16 小黄鸭宝 2026-03-30 16/800 2026-04-03 19:53 by lijunpoly
[考研] 266求调剂 +18 阳阳哇塞 2026-04-01 18/900 2026-04-03 18:38 by zllcz
[考研] 266分,求材料相关专业调剂 +13 哇呼哼呼哼 2026-03-30 15/750 2026-04-03 15:24 by arrow8852
[考研] 机械专硕297 +3 Afksy 2026-04-03 3/150 2026-04-03 14:24 by 1753564080
[考研] 求调剂 +3 晟功? 2026-04-03 3/150 2026-04-03 11:52 by wxiongid
[考研] 282求调剂 +3 aaa车辆 2026-04-02 3/150 2026-04-02 21:55 by zllcz
[考研] 279求调剂 +5 傅文秋 2026-04-02 5/250 2026-04-02 18:10 by 笔落锦州
[考研] 275学硕081000服从调剂到其他专业,保不住本专业了 +7 一只小小水牛 2026-04-02 8/400 2026-04-02 14:23 by alice-2022
[考研] 349求调剂 +6 吃的不少 2026-04-01 6/300 2026-04-01 17:55 by JYD2011
[考研] 南京大学化学调剂 +11 景随风 2026-03-29 16/800 2026-03-31 10:14 by herarysara
[考研] 福建理工大学材料学院先进合金团队招收考研调剂学生 +3 大华金商都 2026-03-30 4/200 2026-03-31 01:04 by 方英俊602
信息提示
请填处理意见