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| 布罗顿罗盘; 袖珍罗盘 | |||
| 地质罗盘 | |||
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Brunton : 7 phrases in 5 subjects |
| Drilling | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 2 |
| Otorhinolaryngology | 1 |
| Technology | 2 |
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