同: "抓"焦点: focal point; focus的: 4次方是 The fourth power of 2 i ...焦点的: facal; focal变焦点的: bifocal单焦点的: single-focusing多焦点的: multifocal非焦点的: afocal共焦点的: confocal三焦点的: trifocal双焦点的: bifocal无焦点的: afocal正焦点的: parfocal无一定焦点的: afocal焦点的在焦点上的有焦点的: focal三焦点透镜；三焦点的；三光眼镜: trifocal象和焦点的间距调节: keying of distance between image and focus以国家为焦点的政策: country focus policy非同焦镜面: non-confocal resonantor同焦共振器: confocal resonator焦点: 1.[数学] [物理学] (二次曲线焦点; 主焦点) focal point; focus 虚焦点 virtual focus; 主焦点 principal focus; 焦点分散 defocus2.(问题的关键所在或争论的集中点) central issue; centre; point at issue 斗争的焦点 the focus of the struggle; 矛盾的焦点 focal points of contradictions; 问题的焦点 the heart of the matter; 争论的焦点 the points at issue3.[气象学] origin4.[冶金学] (焦斑) focal spot 点的: punctual同焦球状干涉: confocal spherical interferometer结点的, 叉点的: crunodal次焦点: secondary focal point; secondary foci
