英语词汇“aperture card”是什么意思，“aperture card”的读音、用法及例句翻译-烛光网

词汇	aperture card
释义	aperture cardn.（名词） A punched card on which frames of a microfilmed document are mounted.窗孔卡片，穿孔卡片：镶有缩微胶片的穿孔卡片
随便看	smooth collie smooth dog smooth dogfish smoothed smoothen smoothened smoothening smoothens smoother smoothest smooth fox terrier smooth hound smoothie smoothie smoothies smoothing smooth muscle smooths smooth-tongued smoothy smooth–tongued smorgasbord smorgasbords smote smote

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