| |||
commercial correspondence | |||
business communication; business correspondence | |||
commercial communication |
商业 通信 : 29 phrases in 10 subjects |
Aviation | 2 |
Computer networks | 1 |
Cryptography | 1 |
Electronics | 13 |
Information technology | 2 |
International trade | 1 |
Securities | 1 |
Space | 5 |
Telecommunications | 2 |
United States | 1 |