凹镜 āojìng concave mirror Definitions Defs Origin Strokes Stroke Words Sentences Sents 凹镜 (凹鏡) āojìng concave mirror Frequency Written text 0.015 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
凹镜 (凹鏡) āojìng concave mirror Frequency Written text 0.015 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
