external edge angle[机] 外刃口角

external shoulder angle阳角扇形砖

external cone angle面角

external blade angle外周叶片角

external l angle bead tile阳条砖

external friction angle of soil土的外摩擦角

external angle bisector外分角

external angle scapula肩胛外侧角

residual external angle余外角

external angle of scapula肩胛外角