petrochemical

石化产品、石油化学制品常用复数

Plastics and synthetic fibers are made from petrochemicals.

塑胶和合成纤维都是用石化产品制成的。

石化的、石油化学的

The petrochemical industry employs thousands of workers in this region.

石化业在这个地区雇用了数千名工人。