| |||
| 产品改良 | |||
| 产品改进 (improve) | |||
| 产品改型 | |||
| 产品改进; 普通产品改进法 (各国普遍采用的武器装备改进方法) | |||
|
product improvements : 36 phrases in 12 subjects |
| Agriculture | 1 |
| Air defense | 2 |
| Automated equipment | 1 |
| Aviation | 8 |
| Business | 4 |
| Commerce | 2 |
| Electronics | 6 |
| General | 1 |
| Marketing | 1 |
| Metallurgy | 1 |
| Project management | 1 |
| Space | 8 |