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1.The gyroscopic clinometer was used to measure the angle of the sun in the sky.
陀螺测角器被用来测量天空中太阳的角度。
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2.The gyroscopic clinometer was used to measure the angle of the earth's rotation.
陀螺测角器被用来测量地球的旋转角度。
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3. The gyroscopic clinometer was used to measure the angle of the moon's phases.
陀螺测角器被用来测量月亮相位的角度。