单词	backup relay
释义	backup relay noun : a secondary relay to protect a power system against faults in the event of failure of the primary relay to function as desired Word History First Known Use 1950, in the meaning defined above
随便看	Chaucer chauceres chaucerian Chaucerism chaucers chaud-medley chaud-mella chaud-melle chaudfroid chaudfroids chaudron chaufers chauffer chauffers chauffeur chauffeured chauffeuring chauffeurs chauffeuse chauffeuses chaug chaukidar chaukidars Chauliodontidae chaulmoogra

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