“aperture angle”的概念、定义、翻译、参考文献-科学参考

单词	aperture angle
释义	aperture angle [`ap·ǝ·chǝr ´aŋ·gǝl] ^OPTICS The angle subtended by the radius of the entrance pupil of an optical instrument at the object.
随便看	lightening hole lighter lighterage lighter-than-air craft light exposure light filter light float light fog light freeze light frost light-gating cathode-ray tube light guide light gun light homing light-hour lighthouse lighthouse tube light howitzer light hydrogen lighting branch circuit lighting-off torch light-inspection car light intensity light ion light list

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