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| 磁偏仪〔计〕 | |||
| 磁偏仪计 | |||
| 赤纬计 | |||
| 磁偏计; 测斜仪; 偏角仪; 方位计 | |||
| 磁偏仪; 偏角计 | |||
| 赤纬 〔方位，偏角〕计 | |||
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declinometer : 6 phrases in 1 subject |
| Technology | 6 |
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