;
近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.
羽上，羽枝以螺旋形绕著管状
羽芽生
，管子一侧接合一起形成羽轴，同时管子另一侧形成新羽枝脊。
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.
羽上，羽枝以螺旋形绕著管状羽芽生，管子一侧接合一起形成羽轴，同时管子另一侧形成新羽枝脊。
声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件
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