短語詞組短語cone apex angle 錐頂角cone semivertex angle 錐躰半頂角expansion cone half angle 擴張半角cone apex angle control 錐角調(diào)制cone generating angle 圓錐展成角divergent cone half angle 擴散段半錐角spray cone -angle 霧化錐角cone vertex angle 錐頂角bottom cone inclination angle 底錐霤角 返回 cone angle