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| 1. | horizontal sextant angle |
| 水平夹角 |
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| 2. | horizontal angle brace |
| 水平隅撑 |
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| 3. | horizontal angle of deviation |
| 水平偏向角 |
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| 4. | The horizontal angle of the observer's bearing in surveying, measured clockwise from a referent direction |
| 方位角观察者通过测量所具有的水平角度，从某一参考方向顺时针测量，如从北部或从参考天体处，通常从北极星 |
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| 5. | Horizontal angle of the cone of vision |
| 水平视锥角 |
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| 6. | horizontal view angle |
| 水平视角 |
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| 7. | horizontal lens angle |
| 透镜水平角 |
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| 8. | The direction to an object from a point, expressed as a horizontal angle measured clockwise from true |
| 从一点到目标的方向，表示为从北开始顺时针测量的一个水平角度。 |
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| 9. | horizontal danger angle |
| 水平方向危险角 |
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| 10. | angle station horizontal sheave |
| 转角站水平导向轮 |
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