...符号和单位 英文名称: Railway applications - Aerodynamics - Symbols and units 页数: 8 采用标准: EN 14067-1-2003,IDT 被替代标准: 归口单位: 引用标准: 分类号: S04 发布日期: 2003..
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应使用国际单位制所规定的物理量的单位和对应的符号。
Units of physical quantites and their symbols shall be those of the international standardized system.
文字的性质取决于文字系统中的单个符号和语言单位的对应关系。
The nature of writing system is decided by the corresponding relation between the symbol in writing and the unit in language.
本文就量与单位,名称与符号,数值和量的运算以及运用中应注意的问题进行了扼要介绍。
This article refers to quanltity and unit, term and symbol, numeral and quanltity, and the mathematic operation relating to them. Aspects needing attentions in use are discussed.
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