能否找到这篇文章? Synthesis of 2-phenylbenzimidazoles from 1,2-phenylenediamines and benzoic acids Shchel'tsyn, V. K.; Maslennikova, T. A.; Volkova, V. A. Osnov. Org. Sintez i Neftekhimiya, (Yaro slavl) (1982), (17), 43-6 From: Ref. Zh., Khim. 1983, Abstr. No. 17N161 别人给的,找不到连接查看更多0个回答 . 1人已关注
经常见到profiled一词,这边是什么意思? Large areas of flat/cylindrical surfaces should preferably be covered with profiled metal sheeting. 对这个词不是很明白,请教这边是什么意思? 查看更多4个回答 . 1人已关注