“backward-wave tube”的概念、定义、翻译、参考文献-科学参考

单词	backward-wave tube
释义	backward-wave tube [`bak·wǝrd ´wāv ´tüb] ^ELECTRONICS A type of microwave traveling-wave electron tube in which electromagnetic energy on a slow-wave circuit flows opposite in direction to the travel of electrons in a beam.
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