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字词 凸面镜
释义 凸面镜tūmiànjìng球面镜的一种,反射面为凸面,焦点在镜后。凸面镜所成的像为正立的缩小的虚像。{convex mirror; spherical mirror with a convex reflective surface whose point of focus is behind it, and which creates upright reduced virtual images;}也叫also凸镜{tūjìng},发散镜{fāsànjìng}
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更新时间:2025/10/18 4:30:18