siphonal l虹吸既
siphonal culvert地下涵洞
siphonal decanter虹吸式滗水器
siphonal deposits体管沉积
siphonal saddle外鞍
siphonal lobe[古生] 体管叶;外叶;腹叶
siphonal siphonic虹吸的
siphonal index呼吸管指数
siphonal impression也称水管痕