双奇偶三维观测系统在国内是一种新的三维勘探方法。

Double even-odd geometry is a new 3-d exploration method at home.

youdao

双奇偶三维观测系统在国内是一种新的三维勘探方法。

Double even-odd geometry is a new 3-d exploration method at home.

youdao