A Comparison of the IRIDIUM and AMPS Systems ( )铱系统与AMPS系统之比较 ( 续 )The synthesis, evaluation and field application of 2 - acrylamido - 2 - methylpropanesulfonic acid ( AMPS ) copolymers are introduced.介绍了 AMPS 聚合物的合成 、 评...
The synthesis, evaluation and field application of 2 - acrylamido - 2 - methylpropanesulfonic acid ( AMPS ) copolymers are introduced.介绍了 AMPS 聚合物的合成 、 评价和现场应用情况.The good effectiveness of AMPS copolymers had been demonst...
I was working all hours and constantly fretting about everyone else's problems.我一刻不闲地工作，总是为别人的事操心。Fretting about it won't help.苦恼于事无补。The old lady is always fretting over something unimportant.那位老妇人总是为一些小事焦虑不安....
a lake, still and serene in the sunlight阳光下宁静安谧的湖水He has entered the serene autumn of his life.他已进入了美好的中年时期.She has a lovely serene face.她有一张可爱而安详的脸....