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单词 focusing ring
释义

Definition of focusing ring in English:

focusing ring

noun

  • A ring on the body of an optical instrument, especially a camera lens, which is rotated to focus the instrument (typically by adjusting the relative position of the lenses).

Origin

Late 19th century; earliest use found in The Official Gazette.

Definition of focusing ring in US English:

focusing ring

noun

  • A ring on the body of an optical instrument, especially a camera lens, which is rotated to focus the instrument (typically by adjusting the relative position of the lenses).

Origin

Late 19th century; earliest use found in The Official Gazette.
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更新时间：2024/11/13 6:47:55