名词
中文翻译：Unknown
同义词：
['factor', 'ratio', 'proportion', 'factor of']
例句：
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1. The coefficient of variation is 0.15, which means that the data is quite stable.
变异系数为0.15，这意味着数据相当稳定。
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2.The ratio of male to female students in this class is 4:1.
这个班级中男生与女生的比例是4:1。
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3. The proportion of people who are overweight is increasing year by year.
肥胖人口的比例逐年增加。
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4. The factor of safety is a critical consideration when designing a bridge.
在设计桥梁时，安全系数是一个至关重要的考虑因素。