P - methoxybenzeneacetonitrile was prepared in 34.8 % yield starting from anisole, via chloromethylation, cyanogenation and fractional distillation.以苯甲醚为原料,经过氯甲基化, 氰化反应后, 通过精馏获得对甲氧基苯乙腈,总收率为34.8%....
被拘留者的关押环境常常恶劣严酷、很不人道。The detainees are often held in cruel and inhuman conditions.他找到了懂得用狂欢来冲淡战争的严酷的志趣相投的军官。He found congenial officers who knew how to leaven war's rigours with riotous enjoyment.你太相信别人了, 严酷的现实是并不是每...
作旋转的心脏线和旋转的星状线,且彼此维持正交.Construct rotating cardioid and astroid while remaining orthogonal to each other.作旋转的心脏线和旋转的三角线,且彼此维持正交.Construct rotating cardioid and deltoid while remaining orthogonal to each other.作旋转的心脏线和旋转的肾...
The press invade people's privacy unjustifiably every day.每天媒体都会毫无道理地干扰人们的生活。Larvae invade red blood cells and reproduce, eventually rupturing the blood cells.幼虫进入红细胞内繁殖并最终导致红细胞的破裂.I don't want to invade your p...
The pair surrendered to him like lambs.那两个人乖乖地向他投降。She gradually surrendered her dream of becoming an actress.她渐渐放弃了当演员的梦想.These patriots would fight to death before they surrendered.这些爱国者宁愿战斗到死,也不愿投降....