| 术语 | underflow |
| 释义 | underflow 下溢;［欠位; 超下位］ 1. The state in which the calculator shows a zero result for the most significant part of a number, while the least significant part of the number is dropped.Example: If the calculator output capacity is four digits, the number .0000432 will be shown as .0000. 计算器把某数的高位有效数显示为零，而丢弃低位有效数的状态.例: 一个数为.0000432，如果计 算器的输出能力为四位，那么，该数将显示为.0000.2. In an arithmetic operation, a result whose absolute value is too small to be represented within the range of the numeration system in use. 在算术运算中，运算结果的绝对值太小，以致不能在所用数制的范围内表示. 3. An attempt to read an item from an empty stack. 一种试图从某一空栈中读取数据项的情形. 参阅arithmetic underflow |
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