| |||
★ 变分法 | |||
变差法 |
variation method : 40 phrases in 12 subjects |
Business | 2 |
Chemistry | 4 |
Demography | 1 |
Economics | 1 |
Electronics | 3 |
Finances | 1 |
Information technology | 1 |
International trade | 1 |
Mathematics | 1 |
Oil / petroleum | 3 |
Polymers | 1 |
Technology | 21 |