Nefedipine was synthesized with m - Nitrobenzaldehyde, ethyl acetoacetate ammonium acetate.以间硝基苯甲醛, 乙酰乙酸乙酯,氨化试剂为原料.The cross - linking reaction between dialdehyde compound and cellulose acetate raises the chemical stabil...
Libertarians argue that nothing should be censored.自由论者主张一切均不应审查。The news reports had been heavily censored .这些新闻报道已被大幅删剪。The Late Show censored the band's live version of 'Bullet In The Head'...《深夜秀》节目删掉了...
很多传媒专家把这些纯新闻频道看作是朝着细分市场这一大势转变的组成部分。Many media experts see such all-news channels as part of a general move towards niche marketing.通常可将一年再按月细分。Months are a conventional subdivision of the year.非调谐耦合系统可进一步细分成三大类.Untuned c...