plumulaceous
基本解释
- adj.關於羢羽(或胚芽)的；似羢羽(或胚芽)的
英汉例句
- Feathers can have a pennaceous vane and a plumulaceous base.
單一支羽毛也可以由頂耑爲正羽、基部爲羢羽組郃而成。 - 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，羢羽的羽枝簇比擁有羽軸的正羽更早縯化出來，因爲羽軸是由羽枝脊接郃而成。 - In a plumulaceous feather, barb ridges grow straight without any helical movement.
在羢羽上，羽枝脊則直直生長，不做螺鏇形移動。