键就像灯的开关一样，它将数字小键盘在计算器风格的数字态和光标态间进行转换。
Num Lock (short for Numeric Lock) Like a light, Num Lock shifts the numeric keypad between calculator-style numeric entry and cursor movement.
键就像灯的开关一样，它将数字小键盘在计算器风格的数字态和光标态间进行转换。
Num Lock (short for Numeric Lock) Like a light, Num Lock shifts the numeric keypad between calculator-style numeric entry and cursor movement.
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