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| 逆负荷 | |||
| 荷载变号; 荷载反向 | |||
| load reversal: 12 phrases in 6 subjects |
| Automobiles | 1 |
| Compressors | 2 |
| Desert science | 1 |
| Metallurgy | 1 |
| Steel production | 1 |
| Technology | 6 |
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