工业上测量流量的方法很多,其中用得最普遍的是用节流装置来测量的方法。因此,本文以此为例进行讨论。设计节流装置时所依据的各参数称为设计工况参数。在实际工况下的各参数称为实际工况参数。为了便于区 There are many ways to measure the flow rate in the industry. The most common method is to measure the flow rate with a throttle device. Therefore, this article takes this as an example to discuss. The design of the throttle device based on the parameters referred to as the design conditions parameters. In the actual conditions of each parameter is called the actual operating parameters. In order to facilitate the area