In a positional representation, the factor dependent on the digit place by which the value represented by a character in the digit place is multiplied to obtain its additive contribution in the representation of a real number.

• 在位置表示法中,每个数位各有一个因子,它与该数位的字符所代表的值相乘,即得到此实数表示中由该数位所提供的值。