Warning: file_put_contents(/www/wwwroot/ppbbu/73904.com/cache/adae06f95c763786a45864b428fa2908.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/73904.com/index.php on line 55 benzylamine例句_benzylamine英汉例句_benzylamine双解例句_骑士汉英词典
Numerous improvements are obtained by employing the amine in molar excess with respect to benzyl halide, preferably in a molar ratio of 2 to 1. 通过使用相对于苄基卤为摩尔过量的胺可以得到大量改善， 优选的摩尔比为2至1。 ip.com