| 单词 | diaphragm |
| 释义 | diaphragm An opaque disc with a circular aperture at its centre. Diaphragms of different sizes are used to control the total light flux passing through an optical system or to reduce aberration by restricting the light passing through a system to the central portion. An iris diaphragm consists of a number of overlapping crescent-shaped discs arranged so that the central aperture can be continuously varied in diameter |
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物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。