EXAMPLE SENTENCES FROM THE WEB
It was only a matter, he said, of transferring a man's habit patterns from brain cells to vacuum-tube cells.
This glow is conceived to represent the Aurora, which may consequently be likened to a gigantic exhibition of vacuum-tube lights.
He guessed that they were housings for vacuum-tube elevator shafts that led to underground caves.
Radiofrequency power is supplied to the dee by a vacuum-tube oscillator.