The angle of {TAIL ~ bending} refers to {HEAD ~ an angle} formed by the longitudinal direction and a line that joins the center of that slot transmission aperture and the short side 
The angle of { TAIL ~ bending } refers to { HEAD ~ an angle } formed by the longitudinal direction and a line that joins the center of that slot transmission aperture and the short side
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH