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[热点] 面上项目没有好文章就没希望了吗? 1234567wang 2026-06-10 刚刚
湖南理科考生,584分,推荐学校有奖    ( 1 2 ) (博学EPI+1)(17/1312) gumei 2010-06-25 2010-09-17 10:34:13 by huanglz062
如何使用host文件或如何禁止这2个网页的反复恶意打开 (5/925) chineseway 2010-08-27 2010-09-17 09:14:00 by zncyet
骨头加工成骨粉 蛋白胨 骨油的书 书名是什么 12 (博学EPI+1)(4/1027) 初生蛟龙 2010-09-16 2010-09-17 08:51:57 by 致死之眠
为什么没有p-Π共轭效应 1 (博学EPI+1)(2/1386) wohaimei 2010-09-16 2010-09-17 08:37:42 by zncyet
求助汉语改错 急! 1 (博学EPI+1)(3/611) amazon_cs 2010-09-15 2010-09-17 08:22:06 by guojiahu
磷钼酸和磷钼酸按 3 (博学EPI+1)(2/375) cometzhang 2010-09-16 2010-09-16 21:42:45 by cometzhang
关于双季戊四醇六丙烯酸酯的实验 8 (博学EPI+1)(1/560) xiaobingsu 2010-09-13 2010-09-16 21:06:33 by qfw_68
求会议奖品的选择    ( 1 2 3 4 ) 15 (博学EPI+1)(34/1854) xi3225763 2010-09-04 2010-09-16 20:26:44 by csh841
ICDD PDF 卡片 (0/2381) shaqiezi 2010-09-04 2010-09-16 18:12:11 by shaqiezi
岩石样品处理 3 (2/527) happyskytl 2010-09-15 2010-09-16 18:10:44 by zhaohaixing
求助 相对定量结果分析 (0/417) 小熊1360 2010-08-27 2010-09-16 18:09:52 by 小熊1360
关于电化学测试 20 (1/287) lily0224 2010-09-16 2010-09-16 18:05:58 by zhutengyi123
[已完结]请教谷氨酸棒状杆菌或黄色短杆菌质粒快速检测的方法 (博学EPI+1)(1/529) mermaid1202 2010-09-16 2010-09-16 18:03:37 by zhutengyi123
溶出实验中加入表面活性剂的量有上限要求吗? 6 (8/1009) 张姗 2010-09-16 2010-09-16 16:54:04 by lemonin2008
[已完结][关贴]笔记本有线上不了网    ( 1 2 ) (博学EPI+1)(10/1091) zhjr1 2010-09-12 2010-09-16 15:24:02 by 哈弗浪子
请教一下为什么锂离子生产工艺中正极要用铝,负极要用铜啊 2 (1/1673) yuan1692 2010-09-16 2010-09-16 15:02:30 by qfw_68
黏度不同的PDMS在性质会有什么差异? 18 (博学EPI+1)(4/8401) young0718 2010-09-16 2010-09-16 14:14:33 by qfw_68
请教各位大侠,科学通报这个杂志咋样,好不好投稿? 1 (博学EPI+1)(6/1734) lyf123 2010-09-13 2010-09-16 13:37:30 by ahvivian
[已完结]和其他两亲聚合物相比,阴离子两亲性聚合物有哪些独特的优点及性能? (博学EPI+1)(1/337) luoguo1985 2010-09-09 2010-09-16 12:30:34 by yachasu
求β-1,3-葡聚糖标准品红外吸收图谱 5 (2/1018) shajunji 2010-09-15 2010-09-16 11:17:16 by liwhite
提纯氯甲烷用的碱洗液配置 (0/335) helious007 2010-09-15 2010-09-16 11:11:47 by helious007
大家合成离子液体用的阴离子交换树脂都在哪买的?什么型号? 9 (博学EPI+1)(1/411) zyj3689 2010-09-15 2010-09-16 11:08:49 by 致死之眠
关于实验对照组的问题 2 (2/322) lovenuan 2010-09-16 2010-09-16 11:06:34 by 致死之眠
Double doping effect on the structural and dielectric properties of PZT ceramics (0/158) sky-blue 2010-09-14 2010-09-16 11:05:00 by sky-blue
苯酚和三氟乙酸催化反应机理 (0/771) 11yanyan 2010-09-14 2010-09-16 11:04:44 by 11yanyan
高纯度氟化镧的制取方法 10 (2/380) zhuliye123 2010-09-14 2010-09-16 11:04:31 by zhuliye123
OTCAI代表什么化学基团的缩写? (0/312) 阿布7568 2010-09-14 2010-09-16 11:04:23 by 阿布7568
D-A 反应中的问题 10 (3/417) 七夜心 2010-09-15 2010-09-16 10:34:30 by 七夜心
有关化学药品 3 (金币≥50)(1/36) axsbear 2010-09-16 2010-09-16 10:28:03 by HCL双鱼
阳离子交换树脂使用 5 (3/537) wanglina 2010-05-08 2010-09-16 10:27:09 by polarbeer
诚问哪能购买到出厂型为氢氧根型的阴离子交换树脂? 1 (博学EPI+1)(2/564) nanyan5311 2010-05-27 2010-09-16 10:19:10 by polarbeer
用什么方法检测未知样品中所含成分? 3 (博学EPI+1)(1/517) Yshaohui 2010-09-16 2010-09-16 10:11:27 by qfw_68
XRD标准图谱求助 10 (2/428) 546373224 2010-09-13 2010-09-16 10:02:28 by 546373224
求助旋流器的有关信息 1 (博学EPI+1)(3/654) wangji8630692 2010-04-14 2010-09-16 10:00:51 by lizhengjie09
紧急求助 怎么测定中间体盐(小分子)的纯度 是最合适的呢 9 (博学EPI+1)(2/372) 化生子 2010-09-16 2010-09-16 09:39:46 by 化生子
小鼠睡眠实验 2 (5/2944) lovenuan 2010-09-15 2010-09-16 09:33:07 by qfw_68
跪求关于Prodigiosin的文献 3 (博学EPI+1)(2/294) 0809180 2010-09-15 2010-09-16 07:33:56 by qfw_68
求稀土取样标准 40 (博学EPI+1)(2/680) 00410048yanling 2010-09-15 2010-09-16 06:59:16 by limi1
请问那些物质的紫外吸收峰能达到近红外(800-1000 nm)? 5 (博学EPI+1)(3/1261) 小欢 2010-09-15 2010-09-16 02:19:18 by 小欢
【求助】考研路上的一只迷途小羔羊【有效期至2010年10月30日】 16 (评阅+1) (博学EPI+1) (金币≥100)(3/27) philiasophia 2010-09-15 2010-09-16 00:12:41 by jianghz10
分离手性2-丁醇各对映体的意义 4 (博学EPI+1)(3/919) 253002249 2010-09-14 2010-09-15 21:48:32 by qhlisen
[已完结]软件版权问题 (博学EPI+1)(3/471) pengping20 2010-09-13 2010-09-15 19:28:20 by zhouy23
聚醚胺盐酸盐,怎么去除盐酸,得到聚醚胺 2 (5/1539) wanggenlin 2010-09-15 2010-09-15 17:15:17 by wanggenlin
xrd 压片不齐能做吗 2 (3/738) yuan1692 2010-09-09 2010-09-15 13:30:34 by 致死之眠
耦合常数如何求 2 (2/510) shuibian1115 2010-09-14 2010-09-15 12:11:13 by 致死之眠
请教标准充电电流0.5CA,其中CA是什么意思? 2 (3/6618) yuan1692 2010-09-15 2010-09-15 11:49:09 by sanghongyuan
CASTEP中内坐标,结合能及弹性系数如何得到 8 (1/611) 1314beyond 2010-09-14 2010-09-15 10:45:15 by guyudan
CAS号求名字、分子式,55金币~有效期到2010.09.25 15 (博学EPI+1)(5/785) 宋宋86 2010-09-14 2010-09-15 08:59:46 by YUE-jf
2010农业科学与工程国际会议-2010年9月10-11日 澳门 9 (博学EPI+1)(2/440) llz26 2010-09-14 2010-09-15 08:57:44 by llz26
代谢组学中(衍生化方面)急 60 (1/867) 409762063 2010-09-12 2010-09-15 08:25:36 by yuhua0502
酯还原 5 (1/366) shuibian1115 2010-09-14 2010-09-15 00:34:10 by onjie
实验中甲醛的获取 (博学EPI+1)(3/439) lzkxtw 2010-09-14 2010-09-14 23:49:53 by qfw_68
求《北京串列加速器核物理国家实验室用户手册》 20 (1/504) flash6669 2010-09-14 2010-09-14 20:45:26 by nokeman
求人帮忙设计名片,谢谢! 20 (2/374) gefei178838881 2010-09-13 2010-09-14 19:07:00 by lfycdymax
请问有人投过《化工科技》吗? 8 (博学EPI+1)(4/1334) gudujian1 2010-09-14 2010-09-14 17:09:43 by gudujian1
吐温20与吐温80的区别 2 (博学EPI+1)(2/13394) xiaozuo001 2010-09-14 2010-09-14 16:46:47 by 紫蓝之芯
诚求水杨酸和铜的络合平衡常数 4 (博学EPI+1)(5/1694) tangyuqin 2010-09-14 2010-09-14 16:39:54 by tangyuqin
[已完结]【求助】gaussian优化问题 (博学EPI+1)(2/496) s084730 2010-08-26 2010-09-14 15:52:00 by ts2009
求当前最前沿化学分析手段 29 (博学EPI+1)(4/1723) sunfanfei 2010-08-26 2010-09-14 15:44:16 by ts2009
求做S-ketal的方法,条件要很温和 (0/296) pure190 2010-05-08 2010-09-14 15:36:44 by pure190
有关高压反应釜釜体材料问题的咨询 4 (博学EPI+1)(2/500) 快乐chem 2010-09-10 2010-09-14 15:28:54 by ts2009
电纺液的问题 3 (博学EPI+1)(2/453) vavga_zd555 2010-09-09 2010-09-14 15:27:31 by ts2009
电脑重装系统那后endnote数据库没了 14 (博学EPI+1)(6/3838) 裸奔的蚂蚁 2010-09-13 2010-09-14 15:04:06 by carrystar
求 分子前线轨道理论与Click反应 有效期至2010年9月5日 10 (评阅+1) (1/283) 190502203 2010-08-31 2010-09-14 12:08:55 by chendong0625
[已完结]求过柱方法 (博学EPI+1)(5/540) chinali5019 2010-09-10 2010-09-14 12:08:49 by chinali5019
关于KBr-KBrO3法测双键的问题 (0/479) leehom1279 2010-09-13 2010-09-14 12:08:37 by leehom1279
Norris微分和SG微分的异同 (0/596) panyuanyua 2010-08-08 2010-09-14 12:07:54 by panyuanyua
羰基与SnCl4的络合能力与亚胺相比谁更强呢? (0/527) cljs 2010-08-23 2010-09-14 12:07:38 by cljs
求助:高分子方向的请进 1 (博学EPI+1)(5/863) eason9973 2010-09-14 2010-09-14 11:23:27 by sanghongyuan
为侄女求姓名    ( 1 2 3 4 ) 21 (博学EPI+1)(36/2277) wyw423 2010-09-13 2010-09-14 10:51:58 by yangxiaoli85
天津18所 2 (1/533) ksx0403 2010-09-14 2010-09-14 10:25:21 by qfw_68
给朋友女儿求名    ( 1 2 ) (19/1766) wujianTFRC 2010-08-12 2010-09-14 09:13:58 by chuxinqingyi
实验问题 5 (3/355) 七夜心 2010-09-13 2010-09-14 08:13:00 by zhaohaixing
聚丙烯酸分子量测定公式 3 (博学EPI+1)(1/680) song1022 2010-09-13 2010-09-13 21:06:09 by guoxiaojing
聚环氧氯丙烷分子量的测定 9 (博学EPI+1)(3/644) eason9973 2010-04-22 2010-09-13 21:03:30 by guoxiaojing
想买个手机魅族M8或M9 高手指点下 1 (博学EPI+1)(7/1135) Lee_Py 2010-09-11 2010-09-13 18:09:47 by 472381055
测酸性大红GR溶液COD的时候,加入Al2O3后,COD增加,不知什么原因? (博学EPI+1)(9/1795) eins331 2010-08-15 2010-09-13 17:46:35 by eins331
化纤油剂 9 (博学EPI+1)(1/382) 雨晴678 2010-09-13 2010-09-13 16:51:16 by qfw_68
求资源《苹果酸工艺学》PDF版 (博学EPI+1)(7/1076) scy139 2010-06-27 2010-09-13 16:48:40 by scy139
英文论文修改 6 (1/414) shaqiezi 2010-09-11 2010-09-13 15:11:40 by 致死之眠
求助高手从豆丁网上下载篇PPT格式的文章 10 (博学EPI+1)(2/512) yuan1692 2010-09-13 2010-09-13 12:21:24 by liwhite
硫酸亚汞(电极)催化 10 (博学EPI+1)(1/845) leonlu 2010-09-08 2010-09-13 10:42:08 by mangonel
请教个比较低级的XRD问题 2 (2/483) yuan1692 2010-09-08 2010-09-13 10:37:37 by qq562676669
二硫化碳可否被氧化分解 5 (博学EPI+1)(3/997) helious007 2010-09-10 2010-09-13 09:28:52 by helious007
关于英文文献中的表述请教 1 (博学EPI+1)(2/659) chen_8722 2010-09-12 2010-09-13 08:45:15 by qfw_68
合成反应 7 (博学EPI+1)(3/365) sdnuzx2009 2010-09-12 2010-09-13 00:28:29 by lidaqiao
[资源下载] 10金币机急求 top drugs top synthetic routes ! (3/777) yaoshaobo008 2009-09-19 2010-09-12 23:21:33 by hongmeifly
岛津液质操作说明 带界面图 8 (博学EPI+1)(2/1516) chen8889 2010-09-11 2010-09-12 22:06:51 by chen8889
求助:高分子方向的请进 3 (博学EPI+1)(5/543) eason9973 2010-09-11 2010-09-12 20:02:06 by laodun
要卖个电泳仪 10 (6/697) hxueren 2010-09-08 2010-09-12 16:25:19 by nokeman
[关贴]western blot前 蛋白含量用测定吗? (1/312) kingoddess 2010-06-08 2010-09-12 15:24:10 by kingoddess
硫化镍中含有硫化锌怎么除去 2 (1/1111) liyurong92 2010-09-11 2010-09-12 14:42:54 by 211985:mad:
游戏时显示无法全屏    ( 1 2 ) 6 (博学EPI+1)(16/1701) yang0502 2010-08-14 2010-09-12 14:34:09 by carrystar
均相反应,两相分离 8 (博学EPI+1)(3/559) mayinhui 2010-09-10 2010-09-11 22:06:28 by arome712
化学结构对毒性的影响 5 (博学EPI+1)(3/1360) luluyao 2010-09-10 2010-09-11 21:58:14 by luluyao
帮忙解一下图 10 (2/373) 582135944 2010-09-11 2010-09-11 21:51:20 by fengtao7905
请问下面这个翻译公司是否为合法的公司,其信誉如何?谢谢 10 (博学EPI+1)(2/1142) liangduoqiang 2010-09-11 2010-09-11 19:40:29 by sanghongyuan
求螺旋藻养殖技术 8 (博学EPI+1)(1/394) frank056 2010-09-11 2010-09-11 19:31:56 by sanghongyuan
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