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单词 subminiature tube
释义 subminiature tube
[¦sǝb`min·yǝ·chǝr `tüb]
ELECTRONICS
An extremely small electron tube designed for use in hearing aids and other miniaturized equipment; a typical subminiature tube is about 11/2 inches (4 centimeters) long and 0.4 inch (1 centimeter) in diameter, with the pins emerging through the glass base.
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