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2007181921232620061206212120200717152242515182117192021258224254024mM=12mθ=60.45.nnnmvMVmv???11323334151①3分:1109??nnvv61222322221212121nnnmvMVmv???321101??nnvVonnnEmvE)81.0(212??120)81.0(EEnn?221nmvEn?nv32222586.0)cos1()cos1(00??????mglmglEE3)cos1(???mglE)cos1(00???mglE)cos1()cos1(00?????mglmglEE123211nnEE)81.0(0?23?n3?n3?n12341101)60cos1(2120???mglmv11gllglv???2201110mvMVmv??3212120212121mvMVmv??3019.0vV??2011.0vv?2)cos1(21122???mglmv1595.0cos1??1707.045coscos1????0145??1)cos1(21222???mglmv676.0cos2??1707.045coscos2??????452?707.07375.0cos3?????453?113110mvMVmv??32121201212121mvMVmv??301109vv??022)109(vv?0)109(vvnn?22)45cos1()109(2120?????????mglvmn)45cos1(81.02120????mglmvn)45cos1(81.0)60cos1(??????mglmgln3?n343nnnmvMVmv???12221212121nnnmvMVmv???1109??nnvv1101??nnvV332260?45?mgLLmgLmgE212)221(2??????mglvmMVE20019)101(19212120211?????EE???122mglvmMVE200001539)101(19212121222?????EEE?????21mglMVE1008120000153921233????EEEE???????32145?21125.xyOy>000x>aB.Omq(q>0)x.0a257T/12TB.:BqBmvr?ax?y0a02a3ar?aOD2?axD2CC/CyC/ax2?ax??0ax?t1t25221?tt12721Ttt??61Tt?1252Tt?C‘3t1t24???60OCM???60
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