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2520042(,200233),,,()(,,,,),1111.1V2500650800100012001400mm,2.5m/s,11.2,,22t/m310.71.02730274520.81.030354530.290.5404540.60.83535505()0.550.65404560.360.5535507()1.62.0303540458()1.21.59()1.12510()1.2111.2©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.26411.3(1),=1t/m3,3,1.1(2)2.0kN/m3(3)0.30.5kN/m3(4)3mm500650800100012001400kN/m1.01.01.52.53.04.022.1(1)F12m,,,(2)151821m,,,(3)2430m,(4),,,,,2.2(),,(),;,(),()2.3,,,(1)F4m,F6m,(2)4m15m,6m,415m,15m(3)15m,,3a,b,c32.4:60m;120m;45m2.5(1);(2)a.:,b.;,1015m4,c.:200300mm,500mm(34)©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3441,:,;,2030,;,;()P=0.300.05MPa;,PH=0.35MPa,PL=0.15MPa,PLL=0.1MPa;,519984,,4,,,,0.4MPa,0.7MPa,0.3MPa,20,(26)4(3)a.,200,1:21520mmb.4(4),,,3(1)(2)(3)(4),,(5),89,4050mm,(6)50m,,(7)()4(1)(2)(3):(4)(),©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3Vol.41No.2©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.