Taking p chlorotoluene as raw material , 2,4 Dichlorotoluene was synthesized via catalytic chlorination process.以对氯甲苯为原料, 经催化氯化制取2,4二氯甲苯.In the reaction of chlorination, carbon tetrachloride was used agent, and chlorine ...
Chlorination is carried out with Nhaloamines and sulfuric acid.氯化是用N- 卤胺和硫酸.The practice of chlorination has become so widespread.氯化法在实践中已得到广泛应用.The process of 2 - chloropyridine chlorination synthesis by pyridine and ap...
Cassie: There was such a drama at Marla's Beauty Salon this morning!卡西: 今天早上玛勒美容院发生的一件事真精采!Cassie Dummett is the technical adviser for South Asia.凯西是一名为南亚服务的科学顾问.This is Cassie speaking.我是凯西....
You can leave a message on our answering machine.您可以在我们的答录机上留言。She was punished by teachers for answering back.她由于顶嘴而受到了老师的惩罚。I called several times, but only got the answering machine.我打了几次电话，但只有电话答录机答话。...
把这些黑醋栗放在平底锅里。Place the blackcurrants in a pan.丹宁柔和,充满橡木, 梅子果实, 巧克力和黑醋栗味道.Soft tannins combined with cedar, berry fruits, chocolate and blackcurrant.味道: 香气芬芳, 混合着黑醋栗和成熟水果的芳香.Nose: In full bloom, with blackcurrant and ripe...
The farmers put up the apples in barrels.农夫们把苹果装入箱内。OPEC production is holding at around 21.5 million barrels a day.石油输出国组织的石油产量保持在每天约2,150万桶。In 1989, Kuwait was exporting 1.5 million barrels of oil a day...1989年，科威特每天出口...
He's a man of few words, very polite and unassuming.他话不多，很有礼貌，为人谦和。He's generous and, you know, very nice, very polite.他很大方而且，你知道，很友善，很有礼貌。I think English men are very polite and very correct.我认为英国人很有礼貌，举止非常得体。...