英语词汇“optical square”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	optical square
释义	optical square noun : a small hand instrument used by surveyors for laying off a right angle by means of two mirrors set at an angle of 45 degrees
随便看	pheasantwood phebe phegopteris pheidole phellandral phellandrene phellem phello- phello phellodendron phelloderm phellodermal phellogen phellogenetic phellogenic phellonic phellonic acid phelonion -phemia phemia phen phen- phenacaine phenacetin phenaceturic

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