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| 利用率 | |||
| 消耗率; 使用率 | |||
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use ratio : 16 phrases in 8 subjects |
| Automobiles | 1 |
| Desert science | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Economy | 1 |
| Electronics | 1 |
| Hydrology | 1 |
| Technology | 9 |
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