relating to or denoting substances obtained by the refining and processing of petroleum or natural gas
石油化工的
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a huge petrochemical works producing plastics .生产塑料的大型石油化工厂。
of or relating to petrochemistry
(与)石油化学(有关)的;(与)岩石化学(有关)的。
a chemical obtained from petroleum and natural gas
石油化学制品。