“optical square”的概念、定义、翻译、参考文献-科学参考

单词	optical square
释义	optical square [`äp·tǝ·kǝl `skwer] ^ENGINEERING A surveyor's hand instrument used for laying of right angles; employs two mirrors at a 45° angle.
随便看	end labeling end lap endless loop endless tangent screw endless tangent screw sextant endlichite end loader end loss end mark end member end mill end-milled keyway end moraine endo- endobasion endobatholithic endobiotic endobranchiate endocardial fibroelastosis endocarditis endocardium endocarp endocast endocervicitis endocervix

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