“quarter-wave attenuator”的概念、定义、翻译、参考文献-科学参考

单词	quarter-wave attenuator
释义	quarter-wave attenuator [`kwȯrd·ǝr ´wāv ǝ`ten·yǝ´wād·ǝr] ^{ELECTROMAGNETISM} Arrangement of two wire gratings, spaced an odd number of quarter-wavelengths apart in a waveguide, used to attenuate waves traveling through in one direction.
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