名词
中文翻译：产品回流
同义词：
['reflux', 'backflow', 'return flow']
例句：
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1.The product reflux caused a significant drop in sales.
产品回流导致销售额大幅下降。
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2.The company's product reflux was a major concern for the investors.
公司的产品回流是投资者们最关心的问题。
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3.The engineer found that the product reflux could be controlled by adjusting the valve.
工程师发现，通过调整阀门可以控制产品回流。