point-source

基本解释

Airy disk brilliance (the brightness of a point-source stellar image) is proportional to the fourth power of aperture.
艾裡斑的亮度(點光源恒星的圖像亮度)正比於孔逕尺寸的四次方。
At present, two main stochastic models, point-source model and finite-fault model, are adopted to simulate ground motions.
隨機法模擬地震動目前主要採用點源模型和有限斷層模型兩種方法。
For most of the regions, isoseismals are of somewhat elongated shape. The empirical point-ellipse model can reduce systematic deviation of point-source and fault-rupture models.
對多數地區，等震線略具狹長的形狀，經騐點橢圓模型可以減小點源模型和斷層破裂模型的系統偏差。

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a source of light or other radiation that can be considered to have negligible dimensions