aperturedadj.带口的aperturen.孔；孔径；光圈；缝隙aperture of sphenoid sinus蝶窦孔aperture pipe shed support管棚支护apertured plate for memory多孔存储板aperture fore-sight disc准星片aperture edge illumination孔径边缘照度aperture-coupled antenna口径耦合天线aperture of labyrinth disc篦齿盘均压孔aperture correction circuit孔径校正电路aperture grill pictute tube荫栅显像管aperture-backed technique背孔技术

1. One of the horizontal lines on a punched card.
   穿孔卡片上的水平行。