英语词汇“spot board”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	spot board
释义	spot board noun : a sighting board laid across the rails in advance of a railroad track-raising gang to indicate the required amount of lift
随便看	stereoplotting stereoprojection stereopsis stereoptican stereoptician stereopticon stereoradiograph stereoradiographic stereoradiography stereoregular stereoregularity stereornithes stereornithic stereos stereoscope stereoscopic stereoscopic stereoscopical stereoscopically stereoscopic camera stereoscopic microscope stereoscopic pair stereoscopic radius stereoscopic vision stereoscopy

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