The exploration and development of fractured oil and gas field has been the difficult problem of world-class.

裂缝性油气田的勘探开发是一个世界级的难题。

youdao

The exploration and development of fractured oil and gas field has been the difficult problem of world-class.

裂缝性油气田的勘探开发是一个世界级的难题。

youdao