“opaque projector”的概念、定义、翻译、参考文献-科学参考

单词	opaque projector
释义	opaque projector [ō`pāk prǝ`jek·tǝr] ^OPTICS A projector designed to project the image of an opaque object, or of graphic material on an opaque support, by reflected light.
随便看	threshold element threshold frequency threshold illuminance thresholding threshold lights threshold limit value threshold of audibility threshold of detectability threshold of feelings threshold of hearing threshold of reaction threshold signal threshold speed threshold switch threshold treatment threshold value threshold velocity threshold voltage Threskiornithidae thribble thrip Thripidae throat throatable throat balls

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