单词	directivity
释义	directivity noun di·​rec·​tiv·​i·​ty də-ˌrek-ˈti-və-tē  (ˌ)dī- : the property of being directional Example Sentences Recent Examples on the Web His idea was to pick up that signal with a portable radio receiver using the receiver’s loopstick antenna for directivity. Andrew Freeman, Outside Online, 21 May 2012 In the Narrow directivity mode, the three full-ranges are used from 200 Hz to 4,000 Hz, so driver output favors a listener sitting in front of the speakers, without the interference of side and rear wall reflections. Robert Ross, Robb Report, 4 May 2021 Word History First Known Use 1928, in the meaning defined above
随便看	sub-cloud car sub-cluster sub-clusters sub-code sub-codes sub-collection sub-collections sub-college sub-collegiate sub-colonies sub-colony sub-commission sub-commissions sub-component sub-components sub-counties sub-county sub-cult sub-cults sub-cycle sub-dean sub-deans sub-decision sub-decisions sub-department

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