... differential-field motor他激差绕直流电动机 differential-field series motor串激差绕直流电动机 differentially-compound wound motor差复激电动机 ...
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... constant-speed motor等速电动机 differential-field series motor串激差绕直流电念头 epicycle motor行星降低速度电念头 ...
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differential field series motor 串激差绕直流电动机
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