| 单词 | aperture |
| 释义 | aperture['æpə,tjuə]n. 孔, 缝隙, 孔径【计】 窗孔; 小孔【医】 口, 孔 aperture ap.er.ture AHD: [²p“…r-ch…r] D.J. [6#p*t.*]K.K. [6#p*t.+]n.（名词）1. An opening, such as a hole, gap, or slit.孔，洞：开口，如洞、缝隙或缺口2. A usually adjustable opening in an optical instrument, such as a camera or a telescope, that limits the amount of light passing through a lens or onto a mirror.光圈：光学仪器上的一个可调开口，如照相机或望远镜，它控制穿过镜头的或到镜面的光的数量3. The diameter of such an opening, often expressed as an f-number.孔径：这种开口的直径，常以f数表示4. The diameter of the objective of a telescope.孔径：望远镜物镜的直径语源:1. Middle English 中古英语 2. from Latin apert&9{¿ra} 源自 拉丁语 apert&9{¿ra} 3. from apertus [past participle of] aper&9{º}re [to open] * see wer- 4源自 apertus [] aper&9{º}re的过去分词 [开，打开] *参见 wer- 4继承用法:ap“ertur”al adj.（形容词） |
| 随便看 |
英汉双解词典收录913115条英汉汉英双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。