候风地动仪 hòufēngdìdòngyí seismograph Definitions Defs Origin Strokes Stroke Words Sentences Sents 候风地动仪 (候風地動儀) hòufēngdìdòngyí seismograph the world's first seismograph, invented by 张衡 Zhāng Héng in 132 AD Cross-References Has abbreviation 地动仪 dìdòngyí Sources Definitions CC-CEDICT
候风地动仪 (候風地動儀) hòufēngdìdòngyí seismograph the world's first seismograph, invented by 张衡 Zhāng Héng in 132 AD Cross-References Has abbreviation 地动仪 dìdòngyí Sources Definitions CC-CEDICT
