石油压裂支撑剂的研制是一项复杂有难度的技术，受到很多因素的影响。

The development of oil fracturing proppant is an intricate task affected by many factors.

youdao

石油压裂支撑剂的研制是一项复杂有难度的技术，受到很多因素的影响。

The development of oil fracturing proppant is an intricate task affected by many factors.

youdao