The main cost of thermal power plant chiefly is the coal consumption, and the operating cost of ball mill is only the one small part . It is not necessity to do risk and sensitivity analysis.
火力发电厂的发电成本主要是煤耗，球磨机的运行费用只是发电费用中的一小部分，所以本文没有做风险分析和敏感性分析。
Operating cost is the main risk factor to the lenders and sensitivity analysis can indicate the relationship between cost factors and lenders' benefits.
对债权人而言，项目经营成本变动会带来风险，敏感性分析可以揭示成本因素与债权人利益之间的对应关系。
METHODS We collected all of related literatures in Chinese Biological Medicine Digest (CBMD) from 1987 to 1999. Then systematic review, cost effectiveness and sensitivity analysis were employed.
方法收集中国生物医学文摘（CBMD） 1987/1999的所有相关文献，进行系统综述、成本效益和灵敏度分析。
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