:1004-7204(2001)02-0009-04PID(,400020):PIDPID:;;PID;:TM93:A1,,,,,,,:SR73FP2lUP750UT750,,PID,,,,,,,,,,,,,,PID2PIDPID,PIDPID:2001-01-17920012,PID,PIDPID,11PIDWY,e,eu2.11P,PID,22:U=Ke+Uo(1-l)K,Uo,0,(1-l)e,,,Y3toe,U,U=Ke+Uo3,0,,U=Ke+UoKee,e,,2.244U=K(e+1/Titoedt)+Uo(2-1),Ti5e,toe,0120012,toe(2-1)1/Titoedt,,Uo2.31:U=K(e+l/Titoedt+Tddedt+Uo(3-1),Td56PID,eto,(3-1)Tddedte,e,Tddedte,0,,,6,PID:P,,P(:P)P,I,,,,D,,,,,,,D,3PIDPID,PID,,,,,,,1120012PID3.1,ID,,P,0.23.2P,,,,P(80%),,3.3,,,,,0,D,PI,,PID,,,PID,PIDPID,,:P,;I,;D,PID,,PIDPID,,,,,,,,,,,,200142120012