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.
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。
At present, wind wave spectrum has been studied extensively, for its important effect on theory study and practicality.
目前，风浪频谱因其在理论研究和实际应用中的重要作用，得到了相当广泛的研究。
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