gra·vi·me·ter /græˈvɪmətɚ/
  比重計,重力計
  gra·vi·me·ter /græˈvɪmətɚ, ˈgrævəˌmɪtɚ/ 名詞
  比重計,比重測定器,重差計
  Gra·vim·e·ter n.  Physics An instrument for ascertaining the specific gravity of bodies.
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  gravimeter
       n 1: a measuring instrument for determining the specific gravity
            of a liquid or solid [syn: hydrometer]
       2: a measuring instrument for measuring variations in the
          gravitational field of the earth [syn: gravity meter]