Gas and liquid heat exchanger - has liquid tubes with external spiral fins either smooth or non continuous?keyword=Gas and liquid heat exchanger - has liquid tubes with external spiral fins either smooth or non continuous专利查询检索|Gas and liquid heat exchanger - has liquid tubes with external spiral fins either smooth or non continuous?keyword=Gas and liquid heat exchanger - has liquid tubes with external spiral fins either smooth or non continuous专利申请-路标网

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Gas and liquid heat exchanger - has liquid tubes with external spiral fins either smooth or non continuous?keyword=Gas and liquid heat exchanger - has liquid tubes with external spiral fins either smooth or non continuous

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