vol·u·me·ter /ˈvɑljʊˌmitɚ/
  體積計,容積計
  Vo·lu·me·ter n.  Physics An instrument for measuring the volumes of gases or liquids by introducing them into a vessel of known capacity.
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  volumeter
       n : a meter to measure the volume of gases, liquids, or solids
           (either directly or by displacement)