TheSilurian on the littoral area has been a part of the Xingkai terrain epicontinental aggradation-al belt.

滨海区的志留系，已成为兴凯地体陆缘增生带的组成部分。

youdao

TheSilurian on the littoral area has been a part of the Xingkai terrain epicontinental aggradation-al belt.

滨海区的志留系，已成为兴凯地体陆缘增生带的组成部分。

youdao