研究表明，失调光学系统的增广矩阵可用三个基本矩阵的有序乘积表示。
It is shown that the augmented matrix of misaligned complex optical systems can be represented by an ordered product of basic matrices.
降雨是影响土壤侵蚀的主要因素，降雨侵蚀力通常用降雨动能和一段时间的最大雨强的乘积表示，简化的计算也可用日降雨量估算。
Its erosivity is usually estimated by the product of rain kinetic energy times the biggest rain density during a certain period, and also, can be determined by the daily rainfall amount.
该算法首先将包含互耦系数信息的信号子空间向量表示为互耦系数矩阵和理想阵列导引向量的乘积。
Firstly, the signal subspace vector including information of mutual coupling coefficients is expressed as product of mutual coupling coefficient matrix and perfect array steering vector.
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