metric systemglossary / METRIC SYSTEM metric system. A decimal system for measuring length, weight, area, or volume, based on the meter as a unit length and the kilogram as a unit mass. 词条贡献者 资深译员筠怡,国际知名法学院民商法专业,专注翻译各种与商业和侵权诉讼有关的法律文件。