单词	watch box,
释义	英華☞watch-box
随便看	series-parallel contact network series parallel control series-parallel control series parallel controller series-parallel controller series-parallel counter series-parallel-coupled buzzer series-parallel firing series-parallel network series-parallel ratio series-parallel reactions series-parallel resistance set series parallel [speed] control series parallel starter series-parallel starter series parallel starting series-parallel starting series-parallel switch series parallel system series-parallel system series-parallel transfer series-parallel turbine series-parallel winding series-parallel，sp series party line