The X axis marks distance from Earth, and the Y axis tracks the passage of time.

X 轴表示距地球的距离，Y 轴表示所用的时间。

Let's use the familiar Cartesian coordinate system with its x and y axes.

让我们使用熟悉的笛卡尔坐标系及其 x 轴和 y 轴。

And the 2nd number tells you how far to walk parallel to the y axis.

第二个数字告诉你平行于y轴走多远。

As a simple example, consider the transformation that rotates space 90 degrees around the Y axis.

作为一个简单的例子 考虑将空间绕Y轴旋转90度的变换。

The next thing we'll need to do is separate vectors into components along our new x and y axis

我们接下来要做的就是拆分股份 具有新 x 和 y 轴的元素的方向。

So we know that all the forces acting along the y axis should add up to zero, since they're all balanced out.

所以我们知道所有的力都沿着一个轴 y 可以加到零，因为它是平衡的。

Now, generally this is the " x axis" , this is the " y axis" , and in this graph you have two axes.

现在，通常这是“x 轴” ，这是“y 轴” ，在此图中有两个轴。

What about in three dimensions? Well, you add a 3rd axis called the Z axis, which is perpendicular to both the x and y axes.

在三维空间中呢 你添加了第三个轴 叫做Z轴 它与x轴和y轴都垂直。

Or rather, I should say p orbitals, because we're talking about 3 dimensional space here, so there can be one on the x axis, and one on the y axis, and one on the z axis.

或者更确切地说， 我应该说 p 轨道，因为我们在这里谈论的是 3 维空间， 所以可以有一个在 x 轴上，一个在 y 轴上， 一个在 z 轴上。