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%.
Paul swam in his ungainly way to the side of the pool.保罗笨拙地游到池子边。On land the turtle is ungainly, but in the water it is very agil.乌龟在陆地上很笨拙, 但是在水里却很灵活.I thought him terribly ungainly when he danced.我觉得他跳舞时显得极其笨拙.He was a...
他做过买卖私酒的生意.He trafficked in illicit liquor.有很多这样的暴发户都是大私酒贩子, 你要知道. ”A lot of these newly rich people are just big bootleggers, you know. "但如果我们是做私酒生意现在又怎么会是坏时机 呢 ?But if someone were in the moonshining business, why woul...
八月十五恰在秋季的中间, 故谓之中秋节.August 15 and in the autumn the middle, so the Autumn Festival.秋天的落叶每日一图.表面照亮来自内部, 秋季的树叶辉耀以彩色是在夕阳时刻.Seemingly lit from within, autumn foliage blazes with color in afternoon sun.2006年秋季的设计将会置于此处, 或许会由你...
Characteristic defects are of two main types; regression and syneresis.特征缺陷主要有两类: 即退化和脱水收缩.They eschew number - crunching and regression models in favour of personal issues.新一代商学院教员避免摆弄数字,也不搞衰退模型,而喜欢研究个性化问题.Water content...