ࡱ > 0 '` R ] bjbj R * 2 ~] ~] ~] 8 ] ^ 2 - :_ b b b Hb p r r r r r r $ h J Q E \ b Hb } # # # b ( Hb p # p # # V @ H D Hb ._ +Y ~] 0 - T v D D @ ! # 3 - 2 $ V V D+ @ 2 V V @ 2 2 2 uINV-N2 0 0 8 2 0 0 9 f[t^^,{ Nf[gg+gՋՋwS ؚ N ir t Ջe1 0 0 R 0 nR:N1 0 0 + 2 0 R N0USy bqQ8 \k\4 RqQ3 2 RkS g N*NT{Hhcknx 1 sQN^TR^vsQ|NRlcknxv/f 0 0A 0irSOv^'YR^_N'Y 0 0B 0irSOv^9eSϑ'YR^_N'Y 0 0C 0irSOv^9eS_R^'Y 0 0D 0irSOv^:NeR^_:N0 2 0sQN(pNRlcknxv/f 0 A . (ϑ_\virSOSNw\O(p B . SOy_\virSOSNw\O(p 0 C . (ϑTSOy_\virSO N[SNw\O(p H Y P E R L I N K " h t t p : / / w w w . 7 c a i e d u . c n / " 0 D . (ϑTSOy_'YvirSO ge_NSNw\O(p 3 0YV@b:y:N N(ϑ:N1 k g vswQ}lf(W Nagv~ NЏRvv t Va1udkSw A . ,{1 yQswQ}lfvR^ g'Y B . 3 y+gyQSp g C . C D kh:yЏR^eTNR^veTvS D . SNBlMR3 yQswQ}lfvs^GW^ 4 0͑R:N 1 0 0 N virSO(W4ls^b NЏRirSOT4ls^bv RiddVpe:N0 . 1 NdkTeirSOS0R N*N4ls^T]vRF = 1 0 N v\O(uYVRirSO@bSvTR:N A 0 B 2 0 N 4ls^T] C 1 0 N 4ls^T] D 1 0 N 4ls^TS 5 0 NirSONH ؚY1uN=~t s =0R0WbRS_[N= E M B E D E q u a t i o n . 3 ey0Wbvؚ^/f A 0 E M B E D E q u a t i o n . 3 B 0 E M B E D E q u a t i o n . 3 C 0 E M B E D E q u a t i o n . 3 D 0 E M B E D E q u a t i o n . 3 6 0YV@b:yirSO(W4ls^ O&^ N O&^ NwsSv[ O&^Ybk TSЏRR H Y P E R L I N K " h t t p : / / w w w . 7 c a i e d u . c n / " 0 0A 0 O&^ SЏReirSOS4ls^TSiddR\O(u B 0 O&^ SRЏReirSOS4ls^T]iddR\O(u C 0 O&^QЏReirSOS4ls^TSiddR\O(u D 0N N Ny`Q N[0 7 0YV@b:y(W N||4ls^b N g$N*N(ϑR+R:Nm 1 Tm 2 v(gWW1 T2 -N(u NS:Nl 0R^|pe:NK v{9_'|ޏcweg(gWWN0WbvnRiddVpe:N0s(u N4ls^R TSc(gWW1 S_$N(gWW Nw SЏRe$N(gWWKNvݍy/f H Y P E R L I N K " h t t p : / / w w w . 7 c a i e d u . c n / " A E M B E D E q u a t i o n . 3 B E M B E D E q u a t i o n . 3 C E M B E D E q u a t i o n . 3 D E M B E D E q u a t i o n . 3 8 NirSOm N*Ns^LNebv\O(uRF c@wl||veb S Nn(WcRSmTirSO~~T NnRvǏz-NirSOm vSR`QNRl-Ncknxv/f A . ͑RlebT NvQRebv/ecR B . ͑RlebT NvQRlebTNvnRiddR C . ͑RlebTNvnRiddRebv/ecR D . ͑RlebT NvQRlebTNvnRiddRebv/ecR N0Yy bk\4 RqQ1 6 Rk Nbk N*NT{Hhcknxo v_2 RY v N~R 9 0irSOZP SSv~ЏR(Wt eQǏvz:NS [(W-NMOns / 2 Yv^:Nv 1 -Ne;Rt / 2 ev^:Nv 2 Rv 1 0v 2 vsQ|cknxv/f A S_irSO\O SRv~ЏRev 1 v 2 B S_irSO\O SQv~ЏRev 1 v 2 C S_irSO\O Sv~ЏRev 1 v 2 D N{irSO\O SR؏/f SQ g v 1 v 2 H Y P E R L I N K " h t t p : / / w w w . 7 c a i e d u . c n / " 1 0 YV@b:y/f9hncTQ[эEeN;uQvLNTTQP[[эǏz-NvMO y eVa9hncVaSwNRl-Ncknxv/f A LNTTQP[[э _Ye/fTeT0WQSv B LNTTQP[[э _Ye/fT0WQSFOTQP[LNHQ,rL Nke C TQP[}6q-NOo`N NO?QFO g~؏/fTQP[HQ0R~p D LN-N}6q=TFO g~؏/fHQNTQP[0R~p 1 1 0YV@b:y, irSOYbk(Web N, ͑RG lWvNebeTTs^LNebeTR:NF 1 TF 2 . YgOeb>P҉ E M B E D E q u a t i o n . 3 baX'Y, irSONYNYbkr`. (Wُ*NǏz-N( ) H Y P E R L I N K " h t t p : / / w w w . 7 c a i e d u . c n / " A 0irSO[ebvSRQ\, @bNYiddR_NQ\ B 0͑RG vRRF 2 nX'Y, F 1 nQ\ C 0F 1 Neb[irSOv/ecR/f N[\O(uRTS\O(uR D 0\O(u(WirSO NvYiddRY~NF 2 s^a 1 2 2 0 0 8 t^9 g6 ekЏO(WSN _U^0bVkeYOQQOePW(Wni N`ꁫur_GSzzpq;Nkpp OePW(Wni NۏLꁫur_GSzzvňnSN{S:NYV@b:yv[nn!jWGPOeTniv;`(ϑ:Nm NGSؚ^:Nh pq;Nkpp N NRiddT~~(ϑR A 0 NGSe:Nt R NGSvs^GW^I{Nh / t 0 B 0 NGSe:Nt R NGSvR^a = 2 h / t 2 . C 0(Wte*N NGSǏz-NOeb~P[vR N[ N\Nm g / 2 . D 0(Wte*N NGSǏz-NOeb~P[vR(W NT6k NT N[kzz2 R,gqQ1 6 bT{HhkX(WT{wSv*j~ N0 1 3 0YV@b:ya 0b $N8nhaS:\vpeR+R:N_ _ _ _ _ _ _ m m _ _ _ _ _ _ _ _ _ m m 0 0 H Y P E R L I N K " h t t p : / / w w w . 7 c a i e d u . c n / " 1 4 1 (W Rvs^LVb_[R [-N \ajvagv NzV[(W4ls^(gg NS Nz| N$N9h~~~~vS Nz g~WYYV0[-N (u$N*N9_'|yR+RROO~WYv^Nb҉^0Wbajvag0gTf[:N(WdkǏz-N_{laNNQy A $N9h~~_{I{0 B ajvag^N$N~9Y҉vs^R~(WT Nv(W~0 C . (WO(u9_'|yelaO9_'|yN(ggs^bs^L0 vQ-Ncknxv/f 0( kXeQv^vW[k) 2 2u0YN$NTf[(W[-N\OQNV@b:yv~g vQ H Y P E R L I N K " h t t p : / / w w w . 7 c a i e d u . c n / " -NF h:y$N*NRRF 1 0F 2 vTR E M B E D E q u a t i o n . 3 h:yF 1 0F 2 vI{HeRR_ _ _ _ _ _ kX 2u b YN Tf[v[/f \͑[N[v0 1 5 0YNV/firSOZP SSv~ЏR_0Rv Nag~&^NO p _Yk5 *NepS N*NpepOgqSbpvHQTz^O!k:N1 0 2 03 04 05 06 Km_s 1 5 . 1 8 c m , S 2 4 . 4 0 c m , s 3 3 . 6 2 c m , s 4 2 . 7 8 c m , s 5 2 . 0 0 c m , s 6 1 . 2 2 c m . ( 1 ) v$Npepve:N s . ( 2 ) irSOvR^'Y\a m / s 2 , eT ( kXA !B bB !A ) . 3 \f~Ǐpep3 ev^'Y\v 3 = _ _ _ _ _ _ _ _ _ _ _ _ _ m / s V {,gqQ4 \qQ3 6 RT{^QQ_veW[f0ez_T͑o{ek0SQQ gTT{Hhv N_R0 gpe