We can estimate two dimensional spatial spectra of sources in colour Guassian noises by eigen decomposing the matrix.
对四阶累量混合波达方向矩阵进行特征分解，可实现有色高斯噪声背景中空域信号二维空间谱估计。
Printer is a mixture of carefully matched solvents ideal for the removal of colour and toner residues from matrix -, ink - and laser-printers.
PRINTER是一种精心调配的溶剂混合物、特别适用于去除点阵式、喷墨式和激光打印机上的颜色和墨粉残渣。
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