计算机程序FDC(Fitting Distribu-tion Curve)是用来拟合选煤分配曲线和可造性曲线中的浮物累计曲线,比重曲线的程序。分配曲线和可选性曲线是评定分选效率的重要工具,也是预测选煤分选效果的重要手段。对选煤厂的设计、技术改造及选煤日常生产管理都是非常有用的。因此,设计一个满意的计算机程序是非常必要的。FDC程序的特点1、将尽可能多的数学模型包含在本 The computer program FDC (Fitting Distribu tion Curve) is a program used to fit the accumulated curve and the gravity curve of floatation in the coal preparation distribution curve and yield curve. The distribution curve and the selectivity curve are important tools to evaluate the separation efficiency and also an important method to predict the separation efficiency of coal preparation. Coal preparation plant design, technological transformation and coal preparation for daily production and management are very useful. Therefore, the design of a satisfactory computer program is very necessary. FDC program features 1, as many mathematical models included in this