汉英词典
Chinese-English Dictionary
MEANING OF 凹面镜
凹面镜 (凹面鏡)
concave mirror
〈名〉球面镜的一种,反射面为凹面,焦点在镜前,当光源在焦点上,所发出的光反射后形成平行光束。简称凹镜。
āo miàn () jìng
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