Furthermore, the same parts may be expressed with different sizes and {TAIL ~ ratios} in {HEAD ~ different drawings} 
Furthermore , the same parts may be expressed with different sizes and { TAIL ~ ratios } in { HEAD ~ different drawings }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD