聚羟基乙酸的经典制备方法主要有两种:直接缩合聚合法和乙交酯开环聚合法. There are two means available for the preparation of PGA - synthesis polymerization and ring - opening polymerization.
He dished up a lot of useful facts and figures.他拿出了许多有用的事实和数据.Hannah had " dished up " an astonishing breakfast for the traveler.海纳为远归者 “ 准备 ” 了一顿绝妙的早餐.The scandal dished his hopes of being elected.这件丑闻使他当选的希望破灭了。They di...
Toleration,moreover,is something which is won,not granted.容忍,是从艰苦中争取来的,不是别人赏赐的。Moreover, but also has some taunts and the admonishment sound.另外, 还有一些嘲讽和规劝的声音.They were forged by them, moreover, into a self-conscious nati...