标准摘要
[中文适用范围]： 本文件描述了如何计算人的呼吸肌在有或没有由各种 RPD（潜水设备除外）造成的外部呼吸障碍的情况下所做的功。 本文档描述了人们可以容忍多少额外障碍，并包含可用于判断 RPD 可接受性的值。 注：一些呼吸生理学教科书（在没有 RPD 的情况下）解释了这些计算，但大多数都忽略了它们或解释不完整。 [外文原描述]： This document describes how to calculate the work performed by a person’s respiratory muscles with and without the external respiratory impediments that are imposed by RPD of all kinds, except diving equipment. This document describes how much additional impediment people can tolerate and contains values that can be used to judge the acceptability of an RPD. NOTE These calculations are explained in some textbooks on respiratory physiology (in the absence of an RPD), but most omit them or are incomplete in their explanations.
英文名称Respiratory protective devices — Human factors — Part 4: Work of breathing and breathing resistance: physiologically based limits