“胚根鞘”用英语怎么说

根和根冠被一鞘 状 结构,即胚根鞘所覆盖.Both root and root cap are covered by a sheath - like structure called the coleorhiza.胚根鞘:保护幼根的鞘状结构.Coleorhiza ( pl . coleorhizae ) The protective sheath surrounding the radicle in grasses....