This idea of the dimension of geometrical concepts is obviously related to the units of measurement of the corresponding physical quantities . 几何量的这种量纲概念,与对应的物理量的计量单位有明显的联系。
Dimensionless numbers may result either from counting or from taking the ratio of two quantities expressed in the same unit of measurement . 无量纲的数,或者由计数而得,或者由求两个采用同一计量单位的量之比率而得。
Characterization of air quality - units of measurement 空气质量表征方法.第1部分:度量单位
Is a unit of measurement that is relative to a parent element 是相对于父元素的度量单位。
The unit of measurement is 1 printer s point 度量单位为打印机的1磅。
any division of quantity accepted as a standard of measurement or exchange; "the dollar is the United States unit of currency"; "a unit of wheat is a bushel"; "change per unit volume" 同义词:unit