A concave mirror would project a real inverted image of the silverpoint onto the panel, which van Eyck would trace.
凹面镜把颠倒的实像投射到木板上,于是范艾克便可以在板子上描画。
A concave mirror would project a real inverted image of the silverpoint onto the panel, which van Eyck would trace.
凹面镜把颠倒的实像投射到木板上,于是范艾克便可以在板子上描画。
As a practical example, an astigmation corrected scanning flat holographio concave grating (SFHCG) is designed and some results of the numerical and optical experiments are given.
给出一消像散SFHCG的设计实例用这块光栅所做的实验结果。
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