• 1. a column vector: 一个列向量 | 列向量

• 1.It's just something to remember: if you have a square matrix times a column vector, the product that makes sense is with the matrix on the left, and the vector on the right.
  只要记住：如果你要用一个方阵，乘以一个列向量，当矩阵在左，向量在右的时候乘积才有意义。
  dict.yoduao.com
• 2.One thing that can be confusing about R's "everything is a vector" approach is that row-wise and column-wise operations may not adhere to your intuition.
  关于 R 的 “所有东西都是向量” 方式，容易引起混乱的一点是行操作和列操作可能不符合直觉。
  dict.yoduao.com
• 3.A new method based on column vector average of the autocorrelation matrix without eigendecomposition is presented to estimate the channel vector.
  本文提出一种基于相关矩阵列矢量平均的信道估计算法，该算法不需要特征分解或跟踪。
  dict.yoduao.com

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