The effect of acidity on synthesis of phenylbiguanide additive reaction of aniline with dicyandiamide was studied.研究了酸度对苯胺与双氰胺加成反应生成苯基双胍的影响.Major Composite of thc SeaIant is bisphenol A epoxy resin, dicyandiamide, ureido...
Old memories constantly recurred to him.往事经常浮现在他的脑海里.She always winced when he recurred to the subject of his poems.每逢他一提到他的诗作的时候,她总是有点畏缩.The name of Mozart recurred frequently in his conversation.在他的谈话中,莫扎特的名字一再地被提到....
I got the dishcloth spitefully scrubbed Edgar's nose mouth, affirming It'served him right for meddling.我拿抹布,愤懑的为埃德加擦脸和嘴, 觉得他多管闲事是罪有应得.The postcard served him as a bookmarker.这张明信片作了他的书签.The new governor dismiss...