The Right of Preemption Ordinance can run price risk and promote the effective use of resources through economic analysis approach.
用经济分析的方法考察优先购买权制度，可以看到，它可以规避价格风险和促进资源的有效利用。
Through economic analysis, the static and dynamic conditions to install low pressure economizer were obtained and the concrete calculation method and the incoming were provided by an example.
通过经济分析，得到了可以加装低压省煤器的静态及动态条件，并以实例说明了具体的计算方法及所取得的收益。
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