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| |||
| 负投入 (与负产出(negative output) 相对) | |||
| 负投人 | |||
| 负输入 | |||
| 负投入 | |||
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negative input : 12 phrases in 7 subjects |
| Aviation | 2 |
| Computers | 1 |
| Earth sciences | 1 |
| Electronics | 3 |
| General | 1 |
| Geophysics | 2 |
| Space | 2 |
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