Word · Frequency #17640
convection
对流
the transfer of heat through a fluid (liquid or gas) caused by molecular motion
指流体中由分子运动引起的热传递；区别于“传导”（conduction）。
- 1.
The transmission of heat in a fluid by the circulation of currents.
流体中通过环流传递热量。
- 2.
the transfer of heat through a fluid (liquid or gas) caused by molecular motion
流体(液体或气体)中因分子运动而产生的热传递
- 3.
The vertical movement of heat and moisture, especially by updrafts and downdrafts in an unstable air mass. The terms convection and thunderstorm are often used interchangeably, although thunderstorms are only one form of convection. Towering cumulus clouds are visible forms of convection.
热量和水分的垂直运动,尤指在不稳定气团中由上升气流和下沉气流引起的垂直运动。对流和雷暴这两个术语经常互换使用,尽管雷暴只是对流的一种形式。高耸的积云是对流的可见形式。
- 4.
(meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere
(气象学)大气中因大规模运动导致的热量或其他属性的垂直移动
流体中通过环流传递热量。；流体(液体或气体)中因分子运动而产生的热传递；热量和水分的垂直运动,尤指在不稳定气团中由上升气流和下沉气流引起的垂直运动。对流和雷暴这两个术语经常互换使用,尽管雷暴只是对流的一种形式。高耸的积云是对流的可见形式。；(气象学)大气中因大规模运动导致的热量或其他属性的垂直移动；传送
In use
The warm air near the radiator rises by convection, warming the whole room.
In a pan of soup, convection creates the rolling motion that carries heat from the bottom to the surface.
Under the hot sun, convection causes the air above the beach to rise and form a breeze.
convection of sth
of 后接热量或物质，说明对流的对象。
The convection of warm air in the room creates a gentle breeze.
房间里暖空气的对流形成了一阵微风。
by convection
作方式状语，常与 transfer、move 等动词搭配。
Heat is transferred by convection through the liquid.
热量通过液体以对流方式传递。
convection occurs in sth
convection 通常作不可数名词，表示抽象的热传递过程。
Connections
Collocations
- natural convection
- 自然对流
- Warm air rises by natural convection, creating air currents.暖空气因自然对流而上升，形成气流。
- forced convection
- 强制对流
- A fan speeds up cooling by forced convection.风扇通过强制对流加速冷却。
- convection current
- 对流气流
- Convection currents in the ocean affect the climate.海洋中的对流影响气候。
- convection oven
- 对流烤箱；热风烤箱
- Use a convection oven to bake the chicken evenly.使用对流烤箱把鸡肉烤得均匀。
- heat convection
- 热对流
- Heat convection in the atmosphere drives weather patterns.大气中的热对流驱动着天气模式。
Confusing words
Learner notes
Memory Tip
想象热汤：底部受热上升、顶部冷却下沉，形成环形“对流”。记住con-一起+vection携带，热量被流体“带着走”。
Context & Register
语域：formal 常见场景：physics、engineering convection（对流）多用于物理学和工程学等专业领域，属于正式书面用语；常见于教材、论文或技术说明中，日常口语中较少单独使用。
Pronunciation & Spelling
All six words rhyme with convection: each has stressed /ɛk/ followed by /ʃən/ in the -ection ending. Beware lookalikes that do not rhyme, such as convention /kənˈvɛnʃən/ and conviction /kənˈvɪkʃən/.
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.