obtuse crossing angle钝角辙叉角
obtuse spherical angle钝球面角
obtuse-angle blade钝角叶片
obtuse e angle钝角
Obtuse-angle grain钝角颗粒
obtuse polyhedral angle钝多面角
obtuse dihedral angle钝二面角
obtuse-angle bevel gearing钝角锥齿轮传动
obtuse-angle blade detail钝角叶片