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| 等方位〔斜面线〕 | |||
| 等磁偏线; 等角多边形; 正多边形 | |||
| 等斜面线 | |||
| 同风向线; 等磁偏线 | |||
| 正多边形【数】; 同方向线; 等角多角形 | |||
| isogon: 3 phrases in 3 subjects |
| Engineering geology | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |
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