Hercynian geosyncline

• 海西地槽

Hercynian geosyncline的用法和样例：

例句

1. The characteristics mentioned above are controlled by the development and evolution of the northern Xinjiang Hercynian geosyncline region of Late Carboniferous age.
   上述特点的产生受新疆北部晚石炭世古海西地槽区发展演化的控制。