con·vec·tion
noun/kənˈvekʃn/
/kənˈvekʃn/
[uncountable] (specialist)- 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）对流 - convection currents
对流气流
Oxford Collocations DictionaryConvection is used before these nouns:- current
- oven
Word Originmid 19th cent.: from late Latin convectio(n-), from Latin convehere, from con- ‘together’ + vehere ‘carry’. - convection currents