/-{-{yīnsù}-}-/, /im³³ sɔk̚⁵/, /im⁴⁴⁻²² sɔk̚³²/, /im⁴⁴⁻³³ sɔk̚³²/, /jɐm⁵⁵ t͡sʰʊk̚⁵/, /insuh/, /jam1 cuk1/, /jam1 tsuk7/, /yem1 cug1/, /yinsù/、/ㄧㄣ ㄙㄨˋ/
(物理學) 聲波在介質中傳遞的速率