他们发现在围绕着地球旋转了大约5000次之后，作为对地球引力的响应，陀螺仪的旋转角发生了极其微小的改变。
And they found that after circling the Earth some 5000 times the gyroscopes' Angle of spin had changed, ever-so-slightly, in response to the Earth's gravitational pull.
月亮强大的引力就像是地球的一个陀螺仪，保证了地球轴心的稳定性。
The strong 3 gravitational pull of our moon ACTS as a global 4 gyroscope stabilizing the Earth's axis.
他们绘制地球区域磁场图，还提出了陀螺仪理论。
They plotted the earth's local magnetic field and worked out the theory of the gyroscope.
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