circuit combine
| quadruple
| circuit combinant abbr. | |
| el. | side circuit |
| circuit combiné abbr. | |
| commun. el. | phantom circuit |
| quadruple abbr. | |
| econ. | quadruplet |
| IT el. | quad |
| med. | fourth; quaternary |
| |||
| phantom circuit | |||
| quad | |||
| |||
| side circuit | |||
|
circuit combine : 9 phrases in 3 subjects |
| Communications | 7 |
| General | 1 |
| Information technology | 1 |