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

The amount of the drift in X direction, Y direction and in spatial angle can be obtained through geometrical optics.

另外，利用几何光学方法得到了激光光束在X方向、Y方向以及空间立体角上的漂移大小。分析了引起光束漂移的原因。

youdao

This is the vertical direction y.

这个是垂直的，Y轨道。

麻省理工公开课 - 固态化学导论课程节选

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

j points away from the origin in the y direction.

从原点指向 y 轴正方向

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