the Langgu Sag

• 廊固凹陷

the Langgu Sag的用法和样例：

例句

1. Most igneous rocks in Langgu depression are products of Cenozoic magma action, with diabase intrusion and subwater effusive basalt as major forms.
   廊固凹陷内火成岩主要是新生代岩浆多期活动的产物。