zhēn​kōng​guǎn

vacuum tube

真空管 zhēn​kōng​guǎn
vacuum tube
an electron tube from which most of the gas has been removed, containing electrodes used for rectifying, detecting, or amplifying electrical signals
vacuum pipe
a general term for any pipe or tube that is empty of air or contains gas at very low pressure

Frequency

Movie subtitles
0.120 per million appears in 0% of films
Written text
0.188 per million

Cross-References

Has abbreviation

Sources