Picoline is the by-product in the preparation of diphenylamine with aniline.
甲基

苯胺连续缩合合成二苯胺的副产物。
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Professor Hawking is one of the most famous scientists in the world and people remember him for his brilliance and also because he communicates using a synthetic voice generated by a computer – synthetic means it’s made from something non-natural.
霍金教授是世界最著名
科学家之一。人们记住他
一个原因是他
聪明才智,还有一个原因就是它是通过电脑合成
声音来与他人沟通
。