The XRD patterns of both the samples were well indexed to the standard cubic CsPbBr3 phase, with no observable secondary phases。个人理解:with no observable secondary phases 有种补充说明的意思,难道是啥补充状语?
...ammar.com/q-6600.html )里说道:表街名、广场名、公园等的专有名词前不用冠词。又如:Wall Street 华尔街、Tian’anmen Square 天安门广场、Hyde Park 海德公园。那请问下面这题呢?表示博物馆的专有名词前要加冠词吗?I'll meet you ...
One of the boys saw it.Both of boys saw it.Either of boys saw it.Neither of boys saw it.Some of the boys saw it.All of the boys saw it.请问这个用法中的介词 of 是一样的吗?