... 太古界;始生界 Archaean group (Archaeozoic) 太古岩 Archaean rock 太洪山虫(三叶虫) Taihungshania ...
双语例句
1
The wall rocks of gold deposits located in Zhaoyuan gold mineralization area were rooted in metamorphic rocks in Jiaodong rock group in Archaean era and granites in Mesozoic era.