| 查看: 366 | 回复: 1 | ||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | ||
落叶风尘金虫 (知名作家)
|
[求助]
跪求翻译。。。
|
|
| H3PO4 then becomes the conductive medium in the membrane. PBI offers several other desirable properties as well, such as high thermo-oxidative stability and a rigid structure at high operating temperatures (Tg ) 425 °C). However, PBI also has several disadvantages.PBI is made from 3,3′,4,4′-tetraaminobiphenyl, which has poor oxidative stability. In addition, PBI cannot be melt processed and has limited solubility in common organic solvents.The synthesis of PBI is designed to limit the molecular weight in order to increase solubility, which has an adverse effect on the mechanical properties. Wainright and co-workers have reported heating a 10% solution in DMAc at 94 °C leaves 69% of the polymer undissolved. However, the lower molecular weight material must be extracted to produce a polymer film with sufficient mechanical properties for fuel cell operation. |
回复此楼» 猜你喜欢
遇见不省心的家人很难过
已经有24人回复
-
依托企业入选了国家启明计划青年人才。有无高校可以引进的。
已经有6人回复
-
博士延得我，科研能力直往上蹿
已经有9人回复
-
天津大学招2026.09的博士生，欢迎大家推荐交流（博导是本人）
已经有6人回复
-
AI 太可怕了，写基金时，提出想法，直接生成的文字比自己想得深远，还有科学性
已经有6人回复
-
有院领导为了换新车，用横向课题经费买了俩车
已经有9人回复
-
酰胺脱乙酰基
已经有13人回复
-
同年申请2项不同项目，第1个项目里不写第2个项目的信息，可以吗
已经有4人回复
-
有时候真觉得大城市人没有县城人甚至个体户幸福
已经有10人回复
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
落叶风尘: 金币+30, 翻译EPI+1, ★★★★★最佳答案 2015-03-24 11:11:41
落叶风尘: 金币+30, 翻译EPI+1, ★★★★★最佳答案 2015-03-24 11:11:41
 本帖仅楼主可见 |
2楼2015-03-23 20:46:45