“地层”造句

矿物往往埋藏在地层深处.
Minerals are often found deep in the ground.

在圈定地层过程中,植被往往具有很大的作用.
The role of vegetation in outlining formations is often of great help.

我们把它们当作实际上的地层单元来考虑,它们主要由岩浆沉积作用所产生.
We regard them as actural stratigraphic units produced primarily by magmatic sedimentation.

• #地层