石油石化行业生产工艺复杂，容易发生各种环境事件。
Environment event often occurs in petroleum and the petrochemical industries because of their complex processing technology.
本文论述了我国加入WTO后石油石化行业将发生的新变化。
This paper discusses the new changes in the petroleum and petrifaction industry after China 's entering into WTO.
在石化市场周期性调整和全球经济衰退的双重压力下，世界石油石化行业遭受重创。
Under a dual pressure from the periodical market adjustment and the global economic recession, the global petroleum and petrochemical industry has suffered a heavy loss.
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