“directivity”的概念、定义、翻译、参考文献-科学参考

单词	directivity
释义	directivity [dǝ´rek`tiv·ǝd·ǝ] ^{ELECTROMAGNETISM} 1. The value of the directive gain of an antenna in the direction of its maximum value. 2. The ratio of the power measured at the forward-wave sampling terminals of a directional coupler, with only a forward wave present in the transmission line, to the power measured at the same terminals when the direction of the forward wave in the line is reversed; the ratio is usually expressed in decibels. ^ELECTRONICS The ability of a logic circuit to ensure that the input signal is not affected by the output signal.
随便看	aperiodic aperiodic antenna aperiodic compass aperiodic damping aperiodic waves apers apertometer Apert's syndrome aperture aperture aberration aperture angle aperture antenna aperture card aperture conductivity aperture disk aperture grill picture tube aperture illumination aperture mask aperture plate guidance station equipment guidance system guidance tape guide bearing guide bracket guide coat

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