英语词汇“aperture”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

ap·er·ture

(ăpər-chər)

1. An opening, such as a hole, gap, or slit.

a. A usually adjustable opening in an optical instrument, such as a camera or telescope, that limits the amount of light passing through a lens or onto a mirror.

b. The diameter of such an opening, often expressed as an f-number.

c. The diameter of the objective of a telescope.

[Middle English, from Latin apertūra, from apertus, past participle of aperīre, to open; see wer-⁴ in the Appendix of Indo-European roots.]

aper·tur′al adj.

单词	aperture
释义	ap·er·ture (ăpər-chər) n. 1. An opening, such as a hole, gap, or slit. 2. a. A usually adjustable opening in an optical instrument, such as a camera or telescope, that limits the amount of light passing through a lens or onto a mirror. b. The diameter of such an opening, often expressed as an f-number. c. The diameter of the objective of a telescope. [Middle English, from Latin apertūra, from apertus, past participle of aperīre, to open; see wer-⁴ in the Appendix of Indo-European roots.] aper·tur′al adj.
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