plumulaceous
基本解釋
- adj.關(guān)于絨羽(或胚芽)的；似絨羽(或胚芽)的
英漢例句
- Feathers can have a pennaceous vane and a plumulaceous base.
單一支羽毛也可以由頂端為正羽、基部為絨羽組合而成。 - 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.
同樣的，絨羽的羽枝簇比擁有羽軸的正羽更早演化出來，因?yàn)橛疠S是由羽枝脊接合而成。 - In a plumulaceous feather, barb ridges grow straight without any helical movement.
在絨羽上，羽枝脊則直直生長，不做螺旋形移動(dòng)。