本文从衍射波扩散出发，提出了另一种分析离轴型全息图再现象与背景光分离条件的方法。
In this paper, Based on diffracted wave diffusion theory another analysis method about the condition keeping reconstructed image separate from backdrop light for off axis hologram is given.
并发现正常限血流图波型可以出现转折波和平顶波。
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