分时操作 | |
proj.manag. | time sharing |
DPA系统 | |
pest.contr. | DPA System |
F系统 | |
rem.sens. | F system |
PELV系统 | |
el.mach. | PELV system |
SELV系统 | |
el.mach. | SELV system |
TN 系统 | |
IT | TN system |
TN-C 系统 | |
IT | TN-C system |
TN-C-S 系统 | |
IT | TN-C-S system |
TN-S 系统 | |
IT | TN-S system |
| |||
time sharing | |||
time-sharing operation |
分时操作: 21 phrases in 10 subjects |
Air defense | 1 |
Business | 2 |
Construction | 1 |
Electronics | 7 |
Geophysics | 2 |
Information technology | 2 |
Oil / petroleum | 1 |
Space | 1 |
Technology | 3 |
Telecommunications | 1 |