You can pick your unit vectors, or what are called basis vectors, any way you like.
你可以任意选取单位矢量,或者也可以叫做基矢量,这都随便你
They are called unit vectors.
它们叫作单位矢量
If you do, the unit vectors are called i prime and j prime, the components of the vector change.
如果这么做,单位矢量就是 i' 和 j',矢量的两个分量也会发生变化
Here is the unit vector i prime, that's unit vector j prime and here is this vector A.
这是单位矢量 i',那是单位矢量 j',以及这是矢量 A
Unit vector i points away from the origin in the x direction.
单位矢量 i 从原点指向 x 轴正方向
i and j are unit vectors in the x and y directions.
和 j 分别是 x 和 y 方向上的单位矢量
i prime and j prime are now rotated unit vectors.
' 和 j' 是旋转后的单位矢量
It's like the unit vector i.
它就像单位矢量 i
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