Thrust value is constant and thrust direction variable.

假定发动机推力大小为常值，方向可调。

youdao

An isogon is a contour line for a variable which measures direction.

等角线是用于测量方向的变量的轮廓线。

youdao

It defines a set of address Spaces for each pointer variable that is optimally efficient for the C8051 architecture, without any specific direction from the programmer.

它为每个对C8051架构最为有效的变量指针定义了一组地址空间，无需从程序员那里获得特殊指示。

youdao

Today, however, the dominant wind is reported to have shifted and wind direction is more variable.

UNESCO: Social and Human Sciences

Any time government tries to force one variable within a free market to a certain value or to move in a certain direction, it destabilizes every other variable.

FORBES: What Kind of Power Is the Most Dangerous?