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。
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.
分析表明，运输链市场份额对运输费用最为敏感，其次是服务质量和运输时间。
The analysis result indicates that the market share is most sensitive to cost, and secondly to service quality and time.
接着设计了费用效益流量基本报表，探讨了敏感性分析的方法及局限性并对风险分析的方法与步骤进行了深入研究。
This paper designs basic report forms of cost's and benefit's flow, discusses the methods and the limitations of sensitivity analysis, and then studies the methods and steps of risk analysis deeply.
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