“pre-TR tube”的概念、定义、翻译、参考文献-科学参考

单词	pre-TR tube
释义	pre-TR tube [prē¦tē`är ´tüb] ^ELECTRONICS Gas-filled radio-frequency switching tube used in some radar systems to protect the transmit-receive tube from excessively high power and the receiver from frequencies other than the fundamental.Derived from pre-transmit-receive tube.
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