辐射谱中某单个频率的空间方向分布和位置分布比较广。
And the intensity of single frequency of the entire spectrum is contributed from emissions with wide spatial and Angle ranges.
不同波场类型的风浪方向谱各组成波的谱密度极值方向不同，表明不同频率的组成波有不同的主方向。
The extremal spectrum density directions of components of wind wave spectrum types are different. This indicates that wave components of different frequencies have different principal directions.
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