| 释义 |
coo·lidge tube
\ˈkülij-\ noun
Usage: usually capitalized C
Etymology: after William D. Coolidge died 1975 American physicist
: a vacuum tube for the generation of X rays in which the cathode consists of a spiral filament of incandescent tungsten and the target which also serves as anode is of massive tungsten, the temperature of the cathode determining the intensity of the X rays while the applied voltage determines wavelength |