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| 单词 | iris diaphragm |
| 释义 | iris diaphragm in British Englishnoun an adjustable diaphragm that regulates the amount of light entering an optical instrument, esp a camera. It usually consists of a number of thin metal leaves arranged so that they open out into an approximately circular aperture Sometimes shortened to: irisiris diaphragm in American English a device consisting of thin, overlapping metal blades that can be adjusted to form an aperture of varying size for camera lenses, etc. Word lists with camera |
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