And when we do measure, we are reduced to relying on estimations and conversion factors.
而当我们进行测量时，我们只能根据估计值与转换因子。
英语百科
Conversion factor
A conversion factor originally known as unity bracket method, is a mathematical tool for converting between units of measurement. It is sometimes referred to as a unit multiplier, and consists of a fraction in which the denominator is equal to the numerator.
近义、反义、联想词
近义词
n.
factor
英英词典
conversion factor n.
factor by which a quantity that is expressed in one set of units must be multiplied in order to convert it into another set of units