N, N - diethylaniline was synthesized under normal tempreture with tetraethyl ammonium hydroxide as phase transfer catalyst. 以苯胺和溴乙烷为原料,用四乙基氢氧化铵作相转移催化剂,在常压下合成N, N二乙基苯胺.
这位刚戴上胜利花冠的战斗英雄一枪没打就束手投降了.The fresh - crowned hero fell without firing a shot.他得摆好戴着月桂花冠的姿势.He had to pose wearing a laurel wreath.有时当果实成熟时也留有花冠的残余.Sometimes remnants of the corolla may also be present when the fruit is m...
他在贝克斯利的住宅坐落在一片小森林中。His home in Bexley is tucked away in a miniature forest.房子十分狭小拥挤，但经纪人却把它说成是小巧别致的住宅。The house was terribly small and cramped, but the agent described it as a bijou residence.你认为今年我们的住宅销路会好转 吗 ?Do you th...