Polyacetadehyde may exist in atactic, syndiotactic and isotactic forms.聚乙醛它和聚烯烃一样,可以以无规, 间同和全同形式存在.Polyacetaldehyde may exist in atactic, syndiotactic and isotactic forms.聚乙醛可以以无规, 间同和全同形式存在.The dissolvability of chlorin...
The best way to represent the isotactic structure is with molecular models.表示等规结构的最好方法是用分子模型.Polyacetaldehyde may exist in atactic, syndiotactic and isotactic forms.聚乙醛可以以无规, 间同和全同形式存在.Polyacetadehyde may exist in atacti...
新鲜鸡蛋会沉下去而不新鲜的会浮在上面。A fresh egg will sink and an old egg will float.道路陡然沉下去又升上来。The road dipped and rose again.它们沉下去时,在水中拖着一道磷光.They sank leaving a trail of phosphorescence in the water....
The Bible commences with the Genesis.《圣经》开头是《创世记》.Genesis recorded a song which took a swipe at greedy property developers who bought up and demolished people's homes...吉妮西丝录制了一首歌来抨击那些买下并毁坏人们家园的贪婪的房地产开发商。His speech ...