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TOEFL BNC: 17640 COCA: 16075

convection

noun
/kənˈvekʃn/
/kənˈvekʃn/
[uncountable] (specialist)
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  1. the process in which heat moves through a gas or a liquid as the hotter part rises and the cooler, heavier part sinks(热通过气体或液体的)运流,对流
    • convection currents对流气流
    Oxford Collocations DictionaryConvection is used before these nouns:
    • current
    • oven
    See full entry
    Word Originmid 19th cent.: from late Latin convectio(n-), from Latin convehere, from con- ‘together’ + vehere ‘carry’.

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