con·vec·tion /kənˈvɛkʃən/
  傳達,對流,對流
  con·vec·tion /kənˈvɛkʃən/ 名詞
  對流
  convection
  對流
  convection
  對流
  Con·vec·tion n.
  1. The act or process of conveying or transmitting.
  2. Physics A process of transfer or transmission, as of heat or electricity, by means of currents in liquids or gases, resulting from changes of temperature and other causes.
     Liquids are generally heated by convection -- when heat is applied from below.   --Nichol.
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  convection
       n 1: the transfer of heat through a fluid (liquid or gas) caused
            by molecular motion
       2: (meteorology) the vertical movement of heat or other
          properties by massive motion within the atmosphere