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

单词	piston attenuator
释义	piston attenuator [`pis·tǝn ǝ`ten·yǝ´wād·ǝr] ^{ELECTROMAGNETISM} A microwave attenuator inserted in a waveguide to introduce an amount of attenuation that can be varied by moving an output coupling device along its longitudinal axis.
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