plumulaceous
基本解释
- adj.关于绒羽(或胚芽)的；似绒羽(或胚芽)的
英汉例句
- Feathers can have a pennaceous vane and a plumulaceous base.
单一支羽毛也可以由顶端为正羽、基部为绒羽组合而成。 - Likewise, a plumulaceous tuft of barbs evolved before the pennaceous feather with a rachis because the rachis is formed by the fusion of barb ridges.
同样的，绒羽的羽枝簇比拥有羽轴的正羽更早演化出来，因为羽轴是由羽枝脊接合而成。 - In a plumulaceous feather, barb ridges grow straight without any helical movement.
在绒羽上，羽枝脊则直直生长，不做螺旋形移动。