Carboxylic crosslinked polystyrene microsphere was prepared by F - C acylation reaction.通过傅克酰基化反应制备了羧基化交联聚苯乙烯微球.The property of Hollow Microsphere Polymer ( HMP ) and its retanning characteristics was discussed in this p...
The planetarium staff also prepared talks for radio broadcast.天文馆的工作人员还要准备讲稿给电台广播.On his days off, he takes them to the Museum of Natural History or the Planetarium.休假的日子里，他就带他们去自然历史博物馆或是天文馆。The motions of the stars can ...
Yesterday's emphatic victory was their fifth in succession.昨天的大胜是他们连续第5场胜利。a succession of visitors络绎不绝的来访者He gave forth a series of works in rapid succession.他很快连续发表了一系列的作品....
Woollen cloth and timber were sent to Egypt in exchange for linen or papyrus.羊毛料和木材送到埃及以换取亚麻布或纸莎草纸.The Egyptians wrote on papyrus.埃及人书写用薄草纸.Since papyrus dries up and crumble, very few documents of ancient Egypt have sur...