Vectors with the same size and the same direction are called equal vectors .
长度相等且方向相同的向量叫做相等向量。
Once the input vectors have passed the "equal size" and "size greater than 1" tests, the heart of the algorithm is executed.
一旦输入向量通过了“大小相等”和“值大于1”测试，就执行算法的核心部分。
So, the area is approximately equal to one half of the area of a parallelogram that I could form from these vectors.
这面积，约等于平行四边形的一半，我能用向量表示它。
Only if the component vectors are on a straight line will the length of the vector for the sum be equal to the sum of the lengths of these components or to their difference.
只有当几个分矢量在一直线上，那么表示其和的矢量长度才会等于这些分量的长度和或它们的差。
Only if the ponent vectors are on a straight line will the length of the vector for the sum be equal to the sum of the lengths of these ponents or to their difference.
只有当几个分矢量在一直线上，那么表示其和的矢量长度才会等于这些分量的长度和或它们的差。
Returns true if the vectors are equal.
如果两个向量相等，返回真。
Returns true if the vectors are equal.
如果两个向量相等，返回真。
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