羽簇
yǔ cù
- fibre fascicle
羽簇
羽簇[yǔ cù]
-
羽毛类型包括丝状羽、簇状绒羽和正羽。
Feather types include filamentous feather , clusters of plumulaceous feathers and pennaceous feathers .
-
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。
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 .