“beam efficiency”的概念、定义、翻译、参考文献-科学参考

单词	beam efficiency
释义	beam efficiency [`bēm i´fish·ǝn·sē] ^{ELECTROMAGNETISM} The fraction of the total radiated energy from an antenna contained in a single beam.
随便看	duck duckbill duck-billed dinosaur duckbill platypus duckfoot duck's nest duck wheat ducod punched card Ducrey test duct ducted fan ducted-fan engine ducted propeller ducted rocket ductile fracture ductile iron ductility ducting ductless gland duct of Cuvier duct of Santorini ductor roller duct propulsion ductus arteriosus ductus deferens

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