residual external angle 余外角

angle of external friction 外磨擦角

an external angle 外角

external angle scapula 肩胛外侧角

external angle bisector 外分角

external angle of scapula 肩胛外角

Non-conventional External Angle 异型外角

external angle of stair step 踏步阳角

external blade angle 外周叶片角

Angle external threaded block valve 角形外螺纹截止阀