商务通信 | |
telecom. | business communication |
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 |
| |||
business communication | |||
commercial communication |
商务通信 : 13 phrases in 6 subjects |
Aviation | 1 |
Computer networks | 2 |
Electronics | 4 |
Information technology | 1 |
Space | 2 |
Telecommunications | 3 |