在许多细胞中,含量最高的磷脂是磷脂酰乙醇胺或脑磷脂.The most abundant phospholipid in many cells is phosphatidyl ethanolamine or cephalin.乙醇胺在气体的纯化和分离方面也是有用的.Ethanolamines are also of value in the purification and the separation of gases.利用不经提纯的棉...
The insured value of the airplane was greater than its book value.该飞机的投保价值高于它的实际账面价值。He slipped and fell on an airplane gangway as the cameras rolled.在摄像时他不慎滑倒在飞机座位间的通道上。They arrived in Belgium by airplane .他们乘飞机到达比利时。...