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| horizontal gyro | |||
| horizon gyro unit | |||
| level gyroscope | |||
| horizontal gyroscope | |||
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水平 陀螺仪 : 8 phrases in 5 subjects |
| Aviation | 2 |
| Drilling | 1 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 2 |
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