On the basis of IEC-61508 directive suggestion, this thesis compares several general methods and comes into a result: assignment of SIL by system model's risk.
本文根据国际标准IEC- 61508的指导意见，通过几种常用方法的比较，确定了利用系统模型的定量风险来确定所需安全仪表系统完整性等级。
And the conclusion study has certain directive guidance significance to study of renew the research subject of the city land use planning and draft out kinds of the research plan assignment.
研究的结论对于指导市（地）级土地利用总体规划修编专题研究项目拟定、各专题研究计划任务书的起草具有一定的指导意义。
And the conclusion study has certain directive guidance significance to study of renew the research subject of the city land use planning and draft out kinds of the research plan assignment.
研究的结论对于指导市（地）级土地利用总体规划修编专题研究项目拟定、各专题研究计划任务书的起草具有一定的指导意义。
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