“high-vacuum switching tube”的概念、定义、翻译、参考文献-科学参考

单词	high-vacuum switching tube
释义	high-vacuum switching tube [`hī ¦vak·yüm `swich·iŋ ´tüb] ^ELECTRONICS A microwave transmit-receive (TR) tube of the high-vacuum variety, as contrasted with gas-tube or semiconductor devices.
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