| environ. |
risk analysis Technique used to determine the likelihood or chance of hazardous events occurring (such as release of a certain quantity of a toxic gas) and the likely consequences. Originally developed for use in nuclear and chemical industry where certain possible events, of low probability, could have extremely serious results. Attempts are being made to use concepts from probabilistic risk analysis to characterise environmental impacts, whose occurrence and nature are not easy to predict with any degree of accuracy (用于确定灾难间相似程度和灾难发生可能性的技术(如有毒气体泄露的量)。原先在核领域和化学领域发生的小概率事件可能会引起极其严重的后果。由于这些自然事件的发生不具有确定性，所以已经尝试使用风险概率分析方法去刻画其对环境的影响。) |
