convection
UK/kәn'vekʃәn/US
TOEFLC1
释义
n.
The transfer of heat through a fluid (liquid or gas) caused by the movement of the fluid itself
对流(热量随流体本身的流动而传递)
词根拆分
词根派生con-(一起)+ vect(运送)+ -ion(过程)= 热量随流动的流体一起被运送的过程。与 conduction(热在静止物质中传导)不同,convection 需要流动:暖空气或温水上升、循环,边动边把热量运走。
词根 vect 还连着 5 个词常用搭配
- 1.heat convection热对流
- 2.convection current对流(环流)
- 3.convection oven对流烤箱
- 4.atmospheric convection大气对流
例句
- 1.
Convection carries warm air upward, creating thunderstorms.
对流把暖空气向上运送,从而形成雷暴。
- 2.
A convection oven cooks food faster by circulating hot air.
对流式烤箱通过循环热空气更快地烹饪食物。
- 3.
The lava lamp works by convection in the heated liquid.
熔岩灯靠受热液体中的对流来运作。
易混词辨析
convection 与 conduction — 都传热,但 convection 需要 流动 的流体把热量实际运走(沸水、上升的空气);conduction 是通过 静止 物质的直接接触传热(金属勺变热)。介质本身在动 → convection。