As a result, {TAIL ~ the production costs} of {HEAD ~ the variable speed motor} are reduced, airgap flux density is reduced, and electromagnetic vibration noise is also reduced 
As a result , { TAIL ~ the production costs } of { HEAD ~ the variable speed motor } are reduced , airgap flux density is reduced , and electromagnetic vibration noise is also reduced
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH