这将为波动特性的动量交换系数及积分时间和长尺度提供新的信息，这些湍流特性不应被视为不变的。
The findings bring new lights in the fluctuating nature of momentum exchange coefficients and integral time and length scales. These turbulent properties should not be assumed constant.
周期时变线性系统系数矩阵的时变性与不可交换性是其精细积分算法设计中的瓶颈。
The time-varying and incommutable character of the coefficient matrix of periodically time-varying linear systems are the bottleneck of the design for high precision direct integration methods.
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