Countries in the world have bent themselves to preventing grave accident occurring inthe petrochemical industry, and safety assessment is one of the most important measures.
长期以来，世界各国一直致力于石油化工企业重大事故的防治工作，安全评价就是其中的一项重要措施。
参考来源 - 化工装置安全评价软件研究与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
His face was grave as he told them about the accident.
他把事故的经过告诉他们的时候，脸上的神情很严肃。
Due to collapse accident of main chute took place in Xincheng Gold mine, the ore lifting system of main shaft was paralysed which caused grave effect on mine operation.
新城金矿主溜矿井曾发生塌落事故，造成了主竖井矿石提升系统的瘫痪，严重影响了矿山生产任务的完成。
Accident means grave crisis to any organization or enterprise.
事故对任何组织或企业而言都意味着严重的危机。
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