A minus symbol indicates that a summary task's subtasks are displayed and a plus symbol indicates that its subtasks are hidden.
减号表示摘要任务的子任务处于显示状态，加号表示摘要任务的子任务处于隐藏状态。
The DecimalFormatSymbols object contains information such as the appropriate decimal and grouping separators and minus sign symbol.
DecimalFor matSymbols对象包含了诸如合适的小数分隔符、分组分隔符及负号标记在内的信息。
The method of expansion and compression of the decimal numeral true form with symbol and ten's complement digit is introduced. And the addition and minus operations of ten's complement are introduced.
阐述了带符号十进制数原码、补码位数的扩展和压缩方法，介绍了十进制补码的加法运算和减法运算。
The method of expansion and compression of the decimal numeral true form with symbol and ten's complement digit is introduced. And the addition and minus operations of ten's complement are introduced.
阐述了带符号十进制数原码、补码位数的扩展和压缩方法，介绍了十进制补码的加法运算和减法运算。
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