进行了经济效果分析。
重点介绍了调速离合器在炼油装置上的实际应用状况、节能效果、经济效果分析，尚待改进的问题和应用前景。
The application of adjustable speed clutch in furfural refining unit, which is the first example, was mainly presented.
通过对大倾角工作面沿空留巷巷道破坏原因的分析，提出了相应的有效支护措施，收到了良好的技术经济效果。
Through analyzing on the reason of large tilt Angle face roadway destruction, corresponding efficient support measures are provided, and good technology economic results are made.
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