单词	electrometer
释义	electrometer noun elec·​trom·​e·​ter i-ˌlek-ˈträ-mə-tər  : any of various instruments for detecting or measuring potential differences or ionizing radiations by means of the forces of attraction or repulsion between charged bodies Example Sentences Recent Examples on the Web Using an instrument called an electrometer, built by Pierre and his brother, Marie measured the mysterious rays emitted by thorium and uranium. Adam Hadhazy, Discover Magazine, 10 Oct. 2019 Word History First Known Use 1749, in the meaning defined above Medical Definition electrometer noun elec·​trom·​e·​ter i-ˌlek-ˈträm-ət-ər  : any of various instruments for detecting or measuring electric-potential differences or ionizing radiations by means of the forces of attraction or repulsion between charged bodies
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