英语词汇“nodal point”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	nodal point
释义	nodal point noun : node; especially : either of two points so located on the axis of a lens or optical system that any incident ray directed through one will produce a parallel emergent ray directed through the other
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