,,,1.(HzJA)HzJA1,811HZJA1;2;3,,5;6,7;8;9,10;n,,,,(),()N:(1)7S,(mm),N,=ES,(Et/mm);(2)kS:N:ES:=Ernk(emm)RR=ZNf=2(Nz+N:)fZEf(S,+emk)fHzJA,100mm,2.(HzWA)2,,()68,,(R),5stR,,,,,,RR^(253t),8~20mm,(1250),DOI10.13199/j.cst.1983.11.25.songzhq.00411111111111112HZwA1,2,3;4,5,6;7;8;9;10,11;12,13;l;15,RBo,():(1)8S:N:=Es:(3),RRo=ZNlf=ZESlf:::,,R(2)S:N:,RA,R:15t(C10mm),lmm1.5t,R,R^Rs=Ro+1SCiRA=R+1SC=Ro+15Cj(0C;C)6C=;/C,1/Cdc,;j;,d=1,,1R,=R+1.5/deR=R+1.5:/de(3),1/125053N:N:=ES:=Eitgy=E,11250OOOOO!!!!!)))IIILLoos3;R,R:=i=(RBR^)e:/(,:)lmm(t/mm),RBR*=lot,B=400mm,1=10mm(4),0.025t/mm,RZ0025eiA^:1.,2.(6a),,(6b)4HZWARi=R+15+0025(iel)RBR+15+0025(Bl)el=lode,RL(b)R+1.5(;,)CR+15+0.025(ei10de)(zeiB)1200o(a)6leses/esseR,,6C,dC,(5),12,,6r,65dcRi,,,3.,,4.,,,,,RT=KB.KZ.RBKB;K;RB:1.KB,R,RR,,KB/=R/R,KK,Bm;n()K,Bm,,RBKz,KzRP/RB,7Rf(=(RB+R)/ZRBKB=K,Bm;,/nKz=RP/R_fBR.deeBRBn-8303KB=0.7(),KB0.75~0.85;KB0.65~0.758303KBKamn7RHzJA,RO,R,f(),Kz0.5HzWA,4Rp=sRdeJO,,41415160680840690900820800730790940830450.85076l00029080087054085__1=(Kn+K,+R,R,+R,,::0910700490400880990650740.94070078035075U74087078064050RK7=-B2(R+Rz)+R:ZRB1+:,Jl032060055085083091038086086061025088072044051081068064042085,KzB,=f(dsB)dKz(8)O11,1Zn2075U.24084027072079:::;:::;{J701KB2.KzKz,,,,Rp,8dcKzsBKzKB,d(,1,20%,,,50%,85%,77%,,1/3,,,,(),1.(1),,9.5%,,10.5%,,,,2.,),5RB,8Kz,RT=KB.RB,;=17OmmHzWA,(6c2),5RB=24t;8Kz0.88;KB0.7HzWART=KBKz.RB=0.7x0.88x24=14.8t/,(KB0.65~0.75;Kz0.50.85),R:4060%,,,