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当要消去的因子是一个基矢量时，用另一个基矢量来点乘，以得到克罗内克尔记号。
When the factor to be cancelled is a base vector we dot-multiply by another base vector to produce a kronecker delta.
克罗内先生指出，穆尔凯尔先生为一些经销店工作过，而没有证据证明《世界新闻报》的任何记者参与其中。
Mr Crone pointed out that Mr Mulcaire worked for a number of outlets and there was no evidence that the any News of the Worldjournalist was involved.
本文利用对称复制及平移复制概念，研究了沃尔什函数的构成，并以矩阵的克罗内克积的形式给出了递推关系。
Making use of the concept of symmetry copy and shift copy, the construction of Walsh functions is studied. Recursive relations are given in the form of Kroneker product of matrix.
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