In a pennaceous feather, the barbs grow helically around the tubular feather germ and fuse on one side to form the rachis.Simultaneously, new barb ridges form on the other side of the tube.
在正羽上,羽枝形绕著管状羽芽生长,在管子一侧接在一起形羽轴,同时在管子另一侧形羽枝脊。
In a pennaceous feather, the barbs grow helically around the tubular feather germ and fuse on one side to form the rachis.Simultaneously, new barb ridges form on the other side of the tube.
在正羽上,羽枝形绕著管状羽芽生长,在管子一侧接在一起形羽轴,同时在管子另一侧形羽枝脊。
声明:上例句、词性分类均由互联网资源自动生,部分未经过人工审核,其表达内容亦不代表本软件观点;若发现问题,欢迎向我们指正。