number representation的用法和樣例：
例句
- The digits following the prefix must be appropriate for the number system.
跟在前綴后面的數字必須適合于數制。 - 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.
某一數制中的指定的數值，按其指數冪乘方再乘以尾數即可得到所要表示的實(shí)際數。
