2. Though unimaginable with you 2050 describe in the letter mankind live, I have to tell the oneself again, this is the future
actuality.
尽管对你在来信中描绘的2050年人类生活感到不可思议,但我又不得不告诉自己,这是未来的现实。
3. Characteristic, synthesize technology and market, and production
actuality and development trend of methyl isopropyl ketone were introduced.
介绍了甲基异丙酮的性质、合成技术、国内市场和生产现状及发展建议。