The paper set forth the analysis of risk, estimate and forecast demolition blasting in using method of fault tree analysis in safety system project, so can find the method of forecast accident.

阐述利用安全系统工程的事故树方法分析、评价、预测拆除爆破的风险，找出预防事故的途径。

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The method helped one BASF unit improve forecast accuracy by an average of 20% for all of its products, Mr. Milliken says.

这种方法帮助BASF某业务所有产品的预测准确率平均提升了20％。

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Rough estimates suggest that any useful quake forecast method demands precursors that will prove correct 98 per cent of the time.

粗略的计算显示，任何有价值的地震预测手段，其观测的地震前兆的准确率必须达到98%以上。

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