The digits following the prefix must be appropriate for the number system. 跟在前缀后面的数字必须适合于数制。
In a numeration system,the number that is raised to the power denoted by the exponent and then multiplied the mantissa to determine the number represented. 某一数制中的指定的数值，按其指数幂乘方再乘以尾数即可得到所要表示的实际数。
