However, the color developing sensitivity generally declines when {TAIL ~ a color developing agent} with {HEAD ~ a high melting point} is used 
However , the color developing sensitivity generally declines when { TAIL ~ a color developing agent } with { HEAD ~ a high melting point } is used
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH