英语词汇“principal ray”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	principal ray
释义	principal ray noun 1. : principal visual ray 2. : the one ray of the rays entering an optical instrument from any given point of the object that passes through the exact center of the aperture stop
随便看	tighten tight end tightener tightening tightening pulley tighten one's belt tighter tightest tightfisted tightish tight joint tight-knit tight-laced tight-leg tightlining tight-lipped tight lock tightlock tight-locked tightly tight-mouthed tightness tightrope tights tight sap

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