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单词 rheostat
释义 DEFINITIVE EXAMPLES 权威例句〔dimmer〕A rheostat or other device used to vary the intensity of an electric light.调光器:使电灯光减弱的一种变阻器或其它装置美国传统〔slot car〕An electric toy racing car that fits into a slotted track and is controlled by a rheostat held by the operator.自动玩具车:一种电力玩具赛车,置于一条有槽的轨道上,由操纵者手执的变阻器来控制美国传统〔wiper〕Electricity A movable electrical contact, as in a rheostat.【电学】 接触电刷:变阻器等内部的活动电接触器美国传统A rheostat can be used to control the brightness of electric lights.变阻器可被用来控制电灯的亮度。剑桥国际
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