名词
中文翻译：Unknown
同义词：
['ratio', 'proportion', 'ratio', 'measure']
例句：
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1. The engineer calculated the modulus of elasticity for the material.
工程师计算了材料的弹性模量。
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2. The ratio of sugar to water in this recipe is 1:2.
食谱中糖与水的比例是1:2。
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3. The ratio of the two numbers is 3:4.
这两个数的比是3:4。