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   English
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compressional wave
gen. 縦波 (tatenami) River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 疎密波 (そみつ・は) River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 粗密波 (そみつは) Engineering and Science Technical Dictionary (James Friend)
el., acoust. 圧縮波 (あっしゅくは)
 English thesaurus
compressional wave
abbr., oil c