名词
中文翻译：Unknown
同义词：
['subtractor', 'divider']
例句：
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1. The adder-subtractor is a useful tool for calculating percentages.
加法减法器是计算百分比的有用工具。
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2. The subtractor was used to calculate the difference between two numbers.
减法器被用来计算两个数字之间的差。
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3. The divider was used to divide the number into equal parts.
除法器被用来将数字分成相等的部分。