electron tube

Example Sentences

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Prosecutors said Mr. Ghahreman conspired to use a Dubai-based front company to help supply the Iranians, including with gyrocompasses used for swift boat navigation and electron tubes used for military airborne radar.

From New York Times

Then, too, the older electron tubes had not been entirely replaced.

From Project Gutenberg

They stepped into a little cell, completely surrounded with mirrors and vast prisms and lenses and electron tubes.

From Project Gutenberg