scalar product

标积，标量乘积，标量积，数积，内积，无向积，纯量积

同：	[n.] dot product, inner product

Since scalars are independent of the coordinate system, the dot product of two vectors is called a scalar invariant
因为标量与坐标系无关，故两个矢量的点积称为标量不变量。收藏
If two vectors are associated with each other as a dot product, the result is a scalar
如果两个向量以标量积结合，其结果为一标量。收藏

a real number (a scalar) that is the product of two vectors
[同] dot product, inner product, scalar product

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