调节阀的流量特性用数学表达式为<img src="/Image1/c6/c6f20cd2b6d72626efa1619030c516fb.jpg" style="color: rgb(34, 34, 34); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial, Verdana, sans-serif; font-size: 12px; font-style: normal; font-weight: 400; word-spacing: 0px; white-space: normal; cursor: default; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;" />。