单词	rheostat
释义	rheostat noun rheo·​stat ˈrē-ə-ˌstat  : a resistor for regulating a current by means of variable resistances rheostatic ˌrē-ə-ˈsta-tik  adjective Example Sentences Recent Examples on the Web A rheostat allows the throttle to be fine-tuned to sustain walking speeds. John Pearley Huffman, Car and Driver, 21 June 2017 Word History First Known Use 1843, in the meaning defined above Medical Definition rheostat noun rheo·​stat ˈrē-ə-ˌstat  : a resistor for regulating a current by means of variable resistances
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