plasma mantle的用法和樣例：
例句
- The volcanic rocks of Yanshan Period have features of the mantle source.
燕山期火山巖具備幔源特征。 - Hence peridotite modes can be used to reflect efficiently mantle melting and melt extraction processes beneath ocean ridges only if the excess olivine is removed appropriately.
為此，只要把深海橄欖巖中過(guò)量的橄欖石剔除后，其實(shí)際礦物組分就能有效地反映洋脊下地幔熔融作用和熔融萃取過(guò)程。
