The variable speed motor 1, wherein {HEAD ~ the variable speed motor} comprises {TAIL ~ an outer rotation electric single phase induction motor} 
comprises
The variable speed motor 1 , wherein { HEAD ~ the variable speed motor } comprises { TAIL ~ an outer rotation electric single phase induction motor }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL