| 查看: 366 | 回复: 3 | |||
| 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 | |||
[交流]
【求助】 How to answer these questions about polymer
|
|||
|
1. The glass transition, Tg, for poly(ethylene) is well below 0, yet a dishpan made from poly(ethylene) retains its shape at temperatures well above 0. 2. Radical polymerization of methyl acrylate carried out in tetrahedronfuran solution generates polymer of relatively low molecular weight. 3. Whether the polymerization of an unknown monomer proceeds by a step-growth or chain-growth process can be determined experimentally. How would this be done [ Last edited by wizardfox on 2009-2-19 at 12:45 ] |
回复此楼» 猜你喜欢
情人节自我反思：在爱情中有过遗憾吗？
已经有10人回复
-
今年春晚有几个节目很不错，点赞！
已经有7人回复
-
基金正文30页指的是报告正文还是整个申请书
已经有5人回复
-
过年走亲戚时感受到了所开私家车的鄙视链
已经有5人回复
3楼2009-02-19 23:38:09
4楼2009-02-20 11:44:39