研究了渐近强周期函数空间、渐近周期序列空间的可分性质。
The separability of asymptotically strongly periodic function space and asymptotically periodic sequence space are also discussed.
当声波是空间位置和时间的周期函数时，平面波误差项永远是一负偏差项。
The plane wave error is always negative windage, when the sound wave is the cycle function of space and time.
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