As long as they have a similar shape, and as long as the dimensions of the most inner turn is smaller than {TAIL ~ the corresponding dimensions} of the aperture, the core can be prevented from touching {HEAD ~ the winding sheet} 21  
As long as they have a similar shape , and as long as the dimensions of the most inner turn is smaller than { TAIL ~ the corresponding dimensions } of the aperture , the core can be prevented from touching { HEAD ~ the winding sheet } 21
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH