This is the vertical direction y.

这个是垂直的，Y轨道。

youdao

And I will call this direction y, as I always do perpendicular to the surface.

照惯例把垂直方向，设为y方向。

youdao

Now we take the y direction.

现在看y轴方向。

youdao

If two arrows are equal, you cannot be longer in the x direction and correspondingly short in the y direction.

如果要使两个矢量相等,那么即使 x 分量长一些,y 分量相应地小一些也是不行的

耶鲁公开课 - 基础物理课程节选

For most of us, gravity acts this way, defines a vertical direction very naturally and the blackboard is oriented this way, so very natural to call that x and call that y and line up our axes.

对我们多数人来说,重力作用下,很自然地确定了竖直方向,而我们的黑板又是这个指向的,所以很自然地定出 x 轴和 y 轴,并标出我们的坐标系

耶鲁公开课 - 基础物理课程节选

We could certainly point you in the direction of Samsung Techwin's Video Baby Monitor or Y-Cam's offering, both of which are infrared-and-internet capable cameras that pump the picture straight to your mobile device.

ENGADGET

The explosion in collaborative consumption is indeed transformative, but Y Combinator-backed Balanced is a step in the wrong direction precisely because it extends and supports the legacy infrastructure rather than offering a true peer-to-peer payment solution.

FORBES: Payments Startup Balanced Innovates In Wrong Direction

In other words, the x, y location of the touch, the force or depth of the touch, and the vector direction of the touch (2 angles).

FORBES: Apple's Ridiculous Patent