标准摘要
[中文适用范围]： 给出术语和定义。定义如何描述典型控制阀的固有流量特性和固有可调性。还定义了如何建立遵守制造商规定的流量特性的标准。 [外文原描述]： Defines how to state typical control valve inherent flow characteristics and inherent rangeabilities. Also defines how to establish criteria for adherence to manufacturer's stated flow characteristics.
英文名称Industrial-process control valves. Part 2: Flow capacity. Section Four: Inherent flow characteristics and rangeability