Medicine intermediate N - ethylethylenediamine ( NEED ) was synthesized from acrylamide and ethylamine by addition reaction and Hofmann rearrangement. 以丙烯酰胺为起始原料,经乙胺加成后,再经Hofmann重排两步反应后合成了药物中间体N - 乙基乙二胺 ( NEED ).
Look! There's a drunken man teetering at the head of the stairs.看, 有个醉汉在楼梯顶那里摇摇欲坠呢.The country is teetering on the brink of civil war.这个国家正处在内战的边缘。Three of the hotels are in receivership, and others are teetering on...
They’re channelling the natural resources of youthful idealism into political action.他们正在把青年固有的那种充满理想的热情引导到政治活动中去。Kant and Hegel have developed idealism.康德和黑格尔发展了唯心主义.He was full of youthful idealism.他满脑子都是年轻人的理想主义。She n...
An enable input can be used as a data input for demultiplexing applications.使能输入可以使用作为数据输入为多路解编的应用.The high performance wavelength demultiplexing photodetectors optical wavelength division multiplexing ( OWDM ) systems w...
亚麻籽油是一种颜料展色剂.Linseed oil is a vehicle for paint.要洗掉这种颜料必须用一种特殊的有机展色剂.To flush this pigment, you need a special organic vehicle.柯式油墨主要含有颜料、展色剂 、 稀释剂和添加剂.Offset ink essentially paint, thinner for vehicles, and additives....
The adhesion mechanism of barnacle , limpet, anemone, tube worm are described in this paper.主要介绍海洋生物中藤壶、帽贝 、 海葵 、 管栖蠕虫对其基材的粘附机理.Red, Anemone _ flowered ; stout stems , long stalks , lage thick leaves in dark green , spre...