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| 最佳状态; 最优条件 | |||
| 最有利条件 | |||
| 最佳条件 | |||
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| 最佳工况 | |||
| 最佳状态; 最优条件 | |||
| 最适条件; 最适宜情况 | |||
| 最佳条件 | |||
| optimum conditions: 21 phrases in 10 subjects |
| Agriculture | 1 |
| Business | 2 |
| Desert science | 1 |
| Ecology | 1 |
| Electric machinery | 2 |
| Electronics | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 2 |
| Space | 1 |
| Technology | 8 |