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	streamers streamflow streamier streamiest streaming streaming potential streamings streamless streamlet streamlets streamline streamline flow streamlined streamliner streamliners streamlines streamlinest streamlings streamlining streams streamside streamsides streamway Streamwood streamwort

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