单词	coherer
释义	coherer /kə(ʊ)ˈhiːrə / noun An early form of radio detector consisting of a glass tube loosely filled with metal filings whose bulk electrical resistance decreased in the presence of radio waves.The coherer, however, had several defects in that it was not very sensitive and was difficult to adjust.... The tapper then ceases to function and the coherer is ready for the next wireless signal. The coherer was very finicky and unreliable in operation, so there was a vigorous search for an alternative.
随便看	passenger-kilometre passengerless passenger mile passenger mileage passenger pigeon passenger seat passenger side passenger train passepartout passepartouted passepartout frame passepied passe-pierre passer passer-by passerelle Passeres passeriform passerine passer-through passe-temps pas seul passe-volant pass examination Passface

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