标题： IVOA建议：虚拟天文台中的单位 显示英文标题

标题： IVOA recommendation: Units in the VO

摘要： 本文件描述了编写单位标签("VOUnits")字符串表示的推荐语法。 此外，它还描述了一组已识别和已弃用的单位，这些单位尽可能与其它相关标准（BIPM、ISO/IEC 和 IAU）保持一致。 其目的是符合此规范编写的单位很可能也能被其他知名解析器解析。 为此，我们包含了其他单位语法的机器可读语法。 显示英文摘要

摘要： This document describes a recommended syntax for writing the string representation of unit labels ("VOUnits"). In addition, it describes a set of recognised and deprecated units, which is as far as possible consistent with other relevant standards (BIPM, ISO/IEC and the IAU). The intention is that units written to conform to this specification will likely also be parsable by other well-known parsers. To this end, we include machine-readable grammars for other units syntaxes.