We'll be slicing things by a plane that is now in the directionof this vector,u and we'll be looking at the slope of the slice of the graph.
用沿着向量方向的平面,切开图像,然后看图像的剖面图,找出斜率。
2
The eight planets of our solar system orbit in the same direction along what's called the ecliptic, a flat plane that's nearly aligned with the sun's equator.
太阳系中的八大行星都沿着同一方向在被叫作黄道面(这一平面与太阳赤道面形成微小的夹角)运行。
3
A simple device, such as a lever, a pulley, or an inclined plane, that alters the magnitude or direction, or both, of an applied force; a simple machine.