标准摘要
[中文适用范围]： IEC 60721 的这一部分介绍了自然界中出现的不同气压值的选择。当为产品应用@产品在储存@运输和使用过程中容易暴露的适当气压强度时，它可用作背景材料的一部分。 [外文原描述]： IEC 60721-2-3:2013 presents a selection of different values of air pressure appearing in nature. It is intended to be used as part of the background material when selecting appropriate severities of air pressure for product applications, which products are liable to be exposed during storage, transportation and use. This second edition cancels and replaces the first edition, published in 1987, and constitutes a technical revision. The main changes with regard to the previous edition are as follows: - removal of figures for decreasing cooling efficiency for altitude; - simplification of Table 1; - additional formula for calculating air pressure from altitude.
英文名称Classification of environmental conditions - Part 2-3: Environmental conditions appearing in nature - Air pressure