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Three to listen to: that is, to detect the spring mattress quality measures.
三听：即检测床垫中弹簧质量的措施。
youdao
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The method can be used to detect the other inside quality of egg product.
此方法还可用于蛋品的其它内部品质检测上。
youdao
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The method can be used to detect the other inside quality of egg product.
此方法还可用于蛋品的其它内部品质检测上。
youdao