...、物质的量分数、质 量分数这类量，其单位都是“1”，惯用名称叫做无量纲量，规范名称为量纲一的量（quantity of dimension one），表面上都是无名数，实际上它们都是两个有名数的比值。
2
?量纲为一的量
... 量纲 dimension of a quantity 量纲为一的量quantity of dimension one 无量纲量 dimensionless quantity ...
双语例句
1
On the basis of the hydrological and water quality characteristics of Tongbotang river, a one-dimension-dynamic mathematical model of water quantity and quality was deduced.