py·ro·elec·tric·i·ty /ˈpaɪˌroəˌlɛkˈtrɪsəti, ˈtrɪsti/
  焦熱電
  Pyr·o·e·lec·tric·i·ty n. Physics Electricity developed by means of heat; the science which treats of electricity thus developed.
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  pyroelectricity
       n : generation of an electric charge on certain crystals (such
           as tourmaline) as a result of a change in temperature