名词
中文翻译：纯净检查
同义词：
['cleanliness check', 'cleanliness test']
例句：
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1.Before the product leaves the factory, a purity check is conducted to ensure its quality.
在产品出厂前，进行一次纯净度检查以确保其质量。
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2. The company insists on conducting a purity check before shipping the goods overseas.
该公司坚持在将货物出口前进行一次纯净度检查。
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3. The manufacturer has implemented a purity check system to improve product quality.
制造商已经实施了一个纯净度检查系统来提高产品质量。