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主焦点怎么读

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读音分解

主的发音
焦的发音
点的发音

主焦点的英语：[光学] meridional focus; primary focus; tangential focus; prime focus; principal focus
主焦点的日语：（レンズの）光軸上の焦点.
主焦点的韩语：[명사]〈물리〉 초점. ＝[焦点(1)] [烧shāo点]

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