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| 重力场模型 | |||
| 引力模式 | |||
| 引力模型 | |||
| 重力模型 | |||
| 上地利用、交通规划中应用的重心法; 土地利用、交通规划应用的重心法; 重心模式 | |||
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gravity model : 12 phrases in 4 subjects |
| Earth sciences | 2 |
| Oil / petroleum | 1 |
| Space | 4 |
| Technology | 5 |
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