它介绍了在工程中常用的SIMPLE方法，是一种压力修正的方法，用此法编程能在动车组、电脑风扇、空调等领域中得到广泛应用。-it introduced in engineering SIMPLE commonly used method is a method to correct the pressure, Programming method has been applied in EMUs, computer fans, air-conditioning and other fields to be widely applied.