加速器建成一个圆形，不过周围还有很多辅助设施包围。

The building of the synchrophasotron has a circular shape and it is already surrounded by auxiliary structures.

youdao

加速器建成一个圆形，不过周围还有很多辅助设施包围。

The building of the synchrophasotron has a circular shape and it is already surrounded by auxiliary structures.

youdao