毛毡的上层应与下层重叠。The upper layer of felt should overlap the lower.外面蒙着一层厚厚的防水毛毡.The outside is covered with thick water - proof felt.地毯 、 挂毯 、 车垫 、 沙发垫、羊毛毡垫.Scope of business ; Carpet, tapestry, car cushion, sofa cushion and ...
The seal's flipper is homologous with the human arm.海豹的鳍肢与人类的手臂同源。The former are considered to be homologous with the sepals of Ranunculus.一般认为,前者的花瓣与毛茛属植物花萼同源.Homologous parts, as has been remarked by some authors,...