而环氧粉末涂料的固化反应只有环氧树脂与固化剂 - 双氰胺的交联反应.The cross - linkedstructure of epoxy and phenolic resins increased because of the crosslinking between the two resins.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.The effect of acidity on synthesis of phen...
她用手杖尖翻拨挪动东西。She poked and shifted things with the tip of her walking stick.西蒙拨完号，把听筒贴在耳边。Simon finished dialing and clamped the phone to his ear.轻松捞取利润的可能性吸引了一拨不良商人。The prospect of easy profits has attracted the wrong ki...