retardation是什么意思

网络释义

1)retardation,减速;延迟2)retardation,减速，延迟3)RDV Retard Delay Valve,减速延迟阀4)retarder,减速器，延迟器5)retardation plate,延迟板，减速板6)RDO Retard Delay Orifice,减速延迟节流孔