The outer edge portion 7 is mounted on {TAIL ~ the cylindrical portion} 1A of the casing 1 through {HEAD ~ bolts}  
The outer edge portion 7 is mounted on { TAIL ~ the cylindrical portion } 1A of the casing 1 through { HEAD ~ bolts }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH