名词
中文翻译：差异商
同义词：
['difference ratio', 'differential quotient']
例句：
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1. The difference quotient of 3 and 5 is 2.
3和5的差商是2。
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2. In this problem, we need to find the difference quotient.
在这个问题上，我们需要找到差商。
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3. The difference quotient tells us how much more or less a number changes when multiplied by a given number.
差商告诉我们一个数乘以给定数后多多少或少多少。