本文讨论了球面聚光镜的数学原理，导出了光能密度分布函数，并提出了热能接收器设计方案。
This paper discusses the principle of the concentrating property of the spherical reflector, derives the light energy distributing function, and gives the design of the heat energy receiver.
通过测定不同种植密度玉米群体的光能分布，研究了群体光能分布特征对玉米产量和品质的影响。
The effects of light distribution in maize population on grain yield and quality were studied by determining the light distribution character among different plant densities.
当激光能量密度低于某一临界值时，点火延迟时间随激光能量密度的提高而线性变短，然而激光能量密度超过该临界值后，激光点火延迟时间保持恒定。
The delay time of ignition is shorted with the rise of the energy density of laser linearly, but when the energy density increases over a critical value, the delay time keeps constant.
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