| |||
基本群 | |||
碱性基团 | |||
基础基群 | |||
碱性基; 碱性原子团 | |||
基群; 碱基 | |||
基础群 |
basic group : 22 phrases in 11 subjects |
Aviation | 1 |
Business | 2 |
Chemistry | 1 |
Communications | 1 |
Economics | 2 |
Electronics | 3 |
General | 1 |
Information technology | 1 |
Mineral processing | 1 |
Name of organization | 3 |
Technology | 6 |