基于标量衍射理论，考虑衍射效应的条件下，从理论上推导了编码孔径点扩散函数的公式，并对环形编码孔径进行了详细的讨论。
Considering diffraction effect based on scalar theory, we deduced a formula for point spread function of the coded aperture and discussed the ring coded aperture in detail.
本文改进了常规表面光电压测试少子扩散长度法，采用环形下电极消除了薄样品背面光电压信号对测量结果的影响；
The authors improved the routine steady-state surface photovoltage method to measure minority carrier diffusion length in both sides polished silicon wafers.
并取得良好的扩散热量，没有热点，环形层的一个中立机构，可用于将不发生反应，与耐火材料在这一级别的喷射器。
To obtain good diffusion of the heat without hot points, an annular layer of a neutral body can be used, which will not react with the refractory at the level of the injectors.
并取得良好的扩散热量，没有热点，环形层的一个中立机构，可用于将不发生反应，与耐火材料在这一级别的喷射器。
To obtain good diffusion of the heat without hot points, an annular layer of a neutral body can be used, which will not react with the refractory at the level of the injectors.
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