| 1. | The earth rotates once a day on its axis .
地球绕它的自转轴一天旋转一周。 |
| 2. | Planets revolve about the sun and rotate on their axis .
行星在围绕太阳旋转的同时，也绕着它们的自转轴自转。 |
| 3. | Locations on the earth's surface are specified in terms of the earth's axis of rotation .
地面的定位是沿着地球的自转轴而定的。 |
| 4. | The tilt of the earth's axis, not the shape of its orbit, is what is responsible for the seasons .
形成季节的主要因素不是地球公转轨道的形状，而是地球自转轴的倾斜。 |
| 5. | Lack of orthogonality between a suspension(or centering)axis and the spin axis will then result in a drift-producing torque exerted on the gimbal .
悬挂轴和自转轴间的不垂直度将引起产生漂移作用在框架上的力矩。 |
| 6. | Almost parallel to the orbital plane
自转轴几乎和公转平面平行 |
| 7. | In particular , every electron has its own magnetic field aligned with the axis of its spin
特别是每个电子自身都会产生与其自转轴相一致的磁场。 |
| 8. | For the earth , the rotational axis tilts 23 . 5 . as a result , there is no seasonal change in venus
地球的自转轴倾角为23 . 5 ，所以金星并没有四季之分。 |
| 9. | The orientation of the equatorial belt suggests the parent star maintained the same spin axis both before and after it exploded
环赤道带的方向说白，前身星在爆发前后的自转轴取向保持不变。 |
| 10. | As the earth spins on its rotation axis , it wobbles like a top , slowly swinging the northern hemisphere closer to and then farther from the sun
当地球自转时，自转轴会像陀螺一样晃动，因此北半球与太阳的距离会逐渐接近，继而远离。 |
