The plane of the stirrer blades 15 is inclined at {HEAD ~ an angle} of {TAIL ~ inclination alpha} to the rotation axle 
of
The plane of the stirrer blades 15 is inclined at { HEAD ~ an angle } of { TAIL ~ inclination alpha } to the rotation axle
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH