数量和单位.第1部分:通论

[中文适用范围]： ISO 80000-1 提供了关于量、量系统、单位、量和单位符号以及相干单位系统的通用信息和定义，特别是国际量制（ISQ）和国际单位制（SI）。 ISO 80000-1 中规定的原则旨在供科学和技术的各个领域通用，并作为本国际标准其他部分的介绍。 序数量（ordinal quantities）和名义属性（nominal properties）不在 ISO 80000-1 的范围内。 [外文原描述]： ISO 80000-1:2009 gives general information and definitions concerning quantities, systems of quantities, units, quantity and unit symbols, and coherent unit systems, especially the International System of Quantities, ISQ, and the International System of Units, SI. The principles laid down in ISO 80000-1:2009 are intended for general use within the various fields of science and technology and as an introduction to other parts of the Quantities and units series. Ordinal quantities and nominal properties are outside the scope of ISO 80000-1:2009.