The image of Sichuan Basin can be classified into three image regions and nine sub-regions, which approximately coincide with the basement tectonic units in depth.
本文将四川盆地区域影象划分为三个大的影象区和九个次级影象区，它们与基底构造单元比较吻合。
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Hidden deep underground beneath the west cell block is a sub-basement structure that has not been entered in 100 years.