378 / | HD | X-RAY OR GAMMA RAY SYSTEMS OR DEVICES |
119 | DF | SOURCE {3} |
121 | DF | .~ Electron tube {12} |
125 | .~.~ With movable target {4} | |
126 | DF | .~.~.~> Translation or nutation |
127 | DF | .~.~.~> Temperature modification {3} |
131 | DF | .~.~.~> With specific motor means |
132 | DF | .~.~.~> With specific bearing means {1} |