| 324 / | HD | ELECTRICITY: MEASURING AND TESTING |
| 500 | DF | FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS {10} |
| 537 | DF | .~ Of individual circuit component or element {17} |
| 765 | ![]() | .~.~ Test of semiconductor device {1} |
| 766 | DF | .~.~.~> With barrier layer {3} |