Precession, basically is the change in the direction of earth's axis of rotation.
岁差，基本上是地球自转轴方向的改变。
The earth revolves both round the sun and on its own axis.
地球既公转又自转。
子轴（‘/’或 ‘child::’）
Well, we know we are on the X-axis.
我们在x轴上。
So, let's do the first one on the x-axis.
首先算x轴上的。
Let's say we do rotation about the X-axis.
也就是绕x轴旋转。
You can also change the units on the Y-axis.
您还可以更改y轴上的单位。
This is my time axis, and this is the velocity.
这是时间轴，这是速度。
And our planet, earth, rotates on its own axis.
而且我们这个行星，就是地球还绕着自己的轴自转。
Do you keep the Earth spinning on its axis?
是你让地球不停地绕轴自转了吗？
You know, they can all pass through the same axis.
它们可以穿过同一条轴线。
Remember, the Y-axis is still 1000 pixels high.
要记住，y轴仍然是1000个像素高。
And I could do the same about any axis that I want.
我还可以对任意坐标轴这么做。
They believe the Earth once rotated on a different axis.
他们认为地球曾绕着一个不同的轴转动。
The motion is only in the x-axis, along the x direction.
只在x轴，沿着x轴的方向进行移动。
Then on the y axis, I'm going to plot the total pressure.
我利用y轴表示总压强。
The world needs to turn with a value system at its axis.
世界需要建立中枢价值体系。
Well, I guess even then, you could center it on the z axis.
我猜即便那时，你也会把中轴定为z轴。
I'm simply drawing a few lines and some text along the Y-axis.
仅仅在y轴上画了几条线和一些文本。
These let the line chart know what data to display on which axis.
它们让线性图表知道在哪个轴上显示什么数据。
The legend in each chart clearly shows which Y axis is to be used.
每个图表上的图例都清楚地显示了将使用哪个Y轴。
So this is the time axis in seconds and we will cover four seconds.
这是以秒为单位的时间轴,我在这里画四秒。
Perhaps more impressive is how much the quake shifted Earth's axis.
也许更令人印象深刻的是地震使地轴偏移了多少。
So that is the bond axis it's just the axis between the two nuclei.
这就是键轴，它就是两个原子核之间的轴。
Negative values move the object in the direction of the negative axis.
负值则表示向负轴方向移动对象。
The axis of rotation and its support are part of the central pedestal.
旋转轴和它的支撑结构是中央操作台的一部分。
But, actually, that is not true because here the circle is tangent to the axis.
但实际上，这是不对的，因为这个圆与这个坐标轴相切。
They are generally round but stretch longer along one axis than along the other.
总体上它们是圆的，但沿一根轴比另一根轴延伸得要更长一些。
They are generally round but stretch longer along one axis than along the other.
总体上它们是圆的，但沿一根轴比另一根轴延伸得要更长一些。
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