polygonal function meaning in Chinese

多边形函数
折线函数

The design schematic diagram of the system and the principle designing curves of polygonal functions are given , the transfer functions in some relative segments of steam turbine and boiler coordinated control system are deduced ,
给出了系统的设计原理图，以及折线函数的原则设计曲线，推导出了机炉协调控制系统中有关环节的传递函数，分析了系统的工作原理。
Firstly , in the reproducing kernel space , the spline function is discussed and its equivalent relations are gived ; we prove that the 2 - th differential operator interpolation spline function in the space can be expressed not only by the reproducing kernels but also by polygonal functions . so it is easy to prove its best approximation properties in theory and is convenient for numerical calculation in applications , too
首先，在再生核空间中讨论样条函数，给出其等价性条件；证明了空间中的一个二阶微分算子插值样条既可由再生核函数表示又可由折线函数表示，这不仅在理论上便于获得此种插值样条函数的最佳逼近性质，而且在应用上也便于数值计算。