“aperture”的概念、定义、翻译、参考文献-科学参考

单词	aperture
释义	aperture [`ap·ǝ´chǝr] ^ELECTRONICS An opening through which electrons, light, radio waves, or other radiation can pass. ^{GRAPHIC ARTS} A rectangular cutout on an aperture card. ^OPTICS The diameter of the objective of a telescope or other optical instrument, usually expressed in inches, but sometimes as the angle between lines from the principal focus to opposite ends of a diameter of the objective.
随便看	rhombus rho meson Rhopalidae rhopalium Rhopalocera rhopalocercous cercaria Rhopalodinidae Rhopalosomatidae rho-theta navigation rhourd rhubarb rhumbatron rhumb bearing rhumb direction rhumb line rhumb-line course rhumb-line distance rhumb-line error rhumb-line sailing rhyacolite Rhynchobdellae Rhynchocephalia rhynchocoel Rhynchocoela rhynchodaeum

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