wherein P is the concentration of {TAIL ~ the phosphorus compound} in the polyamide resin in terms of phosphorus atom and C is {HEAD ~ the content} of the polyamide resin based on the total amount of the polyamide resin and the polyester resin  
wherein P is the concentration of { TAIL ~ the phosphorus compound } in the polyamide resin in terms of phosphorus atom and C is { HEAD ~ the content } of the polyamide resin based on the total amount of the polyamide resin and the polyester resin
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH