Finally, because {TAIL ~ the rotor} can be formed in {HEAD ~ a small diameter}, hence the inertia thereof is reduced, thus improving the response of the actuator 
Finally , because { TAIL ~ the rotor } can be formed in { HEAD ~ a small diameter } , hence the inertia thereof is reduced , thus improving the response of the actuator
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH