Description of the tree diameter growth using tree age as independent variable may thus give an inflection point of the growth curve.
树木直径的实际生长年龄小于树木年龄，用树木年龄作为自变量来描述直径生长会导致生长曲线出现拐点。
The method of using cubic spline function as fan characteristic curve fitting is introduced. The calculating example is provided and description is made for the specific problem.
介绍了用三次样条函数作通风机性能曲线拟合的方法。列出了计算实例，并对具体问题做了说明。
The main applications are curve modeling and shape description.
本模型的主要用途是曲线造型及形状描述。
应用推荐