numeric aperture

基本解釋

The near-axis field distribution of circular aperture antennas is obtained by numeric integration method.
采用數(shù)值積分方法分析了圓口徑天線非軸向近場(chǎng)分布特性。
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And the numeric simulation is done to get the multi-supporting results of the optical elements with large aperture.
針對(duì)各向同性圓形光學(xué)鏡面做了具體的模擬計(jì)算，對(duì)圓形鏡面的多點(diǎn)支承問(wèn)題進(jìn)行了初步研究。
When system is in long focal length, the height of the immediate image is small while the numeric aperture is large. This will help to correct aberrations of image.
在長(zhǎng)焦位置，中間像面高度小，數(shù)值孔徑大，這種結(jié)構(gòu)形式有利于系統(tǒng)的像差校正。