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.
Mum and I used to fall out a lot.我和妈妈过去经常争吵。Some of the men were obliged to fall out from fatigue.一些人因疲乏而掉队了.In his sleep he let the book fall out of his hand.他睡着时书从手中掉了下来....
Should you buy a home from Lovell, the company promises to buy it back at the same price after three years...如果你从洛弗尔公司买房子，该公司承诺3年后以同样的价格再购回。Should you buy a home from Lovell, the company promises to buy it back at the sa...