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202015345...1.10%20%A.15%B.16%C.30%D.32E.33%D.32%110%120%132%2.||1,AxxaxR||2,BxxbxRABA.||1abB.||1abC.||1abD.||1abE.||1abA.1ab11xa11axa2222xbbxb2112ABbaab1ab3.=30%+20%+50%50607075A.48B.50C.55D.60E.62B.507030%7520%50%6050xx4850xx504.1101031A.23B.12C.512D.25E.1120B.1/2216431012CCpC5.{}na8a24aaa{}nanA.16B.17C.18D.19E.20E.20243128aaaa34a31231aad532440aadn53520Sa6.x2213320xxxx331xxA.12B.15C.18D.24E.27C.1821130xxxx1130xxxx1130xxxx2323211111333618xxxxxxxx7.,xy222xy22xyA.[218]B.[220]C.[236]D.[418]E.[420]B.[2,20]22221142xy22220xy8.557580200M,M8M?A40B41C43D44E48B41557580200752552052052050.841mm9.123450.250.50.30.80.40.750.50.70.20.6A.13B.23C.25D.14E.24C.2510.ABCABC=30ABBABABC=60ABCABCA.1B.2C.2D.22E.3E.33'''sin60'2AHABAB1sin302AHABAB'3'2312ABCABCABSSAB11{an}121,2aa,21(,1,2,3,)nnnaaan100aA.1B.-1C.2D.-2E.0B.-1123456781,2,1,1,2,1,1,2,aaaaaaaa6100616410041aa12OABC,BC=645O(A.12B.16C.18D.32E.36C.182sinsinsinabcRABC6262sin22BCRA32R218SR131800mAB100m/80m/A.600B.900C.1000D.1400E.1600D.14005180055010080t501005000S500018002140014A.B.C.D1A3C().A.49B.1121C.1027D.1927E.827E.82733C323328327P1542632A4B6C9D12E15D12114312CC162533012ABCDEA.12B.21C.1212D.12E.121216.ABC,B=60.2ca.1C902C90B90C2ca2ca90C17.2222xyxy20axby1.1221ab20,0abC22(1)(1)2xy222abdab12dab1,0ab2211d18.abc,,abc.1abc2abc.Eabccab,abc,ab19.2021p1/21827.Cx20x11220220(20)2012019190221xxCCxxxxPC220950105105xxxx813x1220.n.1201.21210.E21.1.2.D222Labc1,,abbcca,,abcL2222222,,abbcca,,abcL223500.1.2500.E12500E23.()(1)(4)fxaxx4x()0.fx11.4a24.aAx4x1224,ab11ab.1,ab.2,ab2()20xabx.A1122abababababab1ab22()802abab22abD112ababab2ab,ab225,,,abcd2()adbc.1.adbc2.adbcA122()2()adadbcad220()0adadad21abcd26~55260ABCDE26.?A.B.C.D.E.CC27.12040A.B.C.D.E.EE28.:?A.B.C.D..CC29.5522:(1)(2)A.B.C.D.E.D30.A.B.35153515C.D.E.CABCACBC31~32123431.A.B.C.D.E.C32.A.B.C.D.E.E33.?A.B.C.D.E.C34.20181170440730G1240:H20020045%A.GHB.HGC.HHD.GGE.GHA35.A.2030603.2B.C.D.E.:BBD36.1245123423A.B.C.D.3E.3E37~3836::(1)1(2)(3)137.2?A.2B.2C.1D.1E.1AA38.23?A.1B.C.D.E.C233333ABEC39.73(1)(2)(3)?A.B.C.D.E.D40.A.B.15C.D.E.CC41.1abcdefwzx234A.aWbcdXeZB.aWbcdaZeC.fXaZZbZWbD.aZdacdfXE.XWbaZdWeA42.4(1)(2)(3)AB.C.D.E.E312ABCDE43.A.B.C.D.E.CC44.A.B.C.D.E.C45.?A.B.205020C.D.50%25%E.B46~47542~312346.A.B.C.D.E.E31CE42-3E47.5A.B.C.D.E.A10A48.18182575?A.B.C.19D.E.--A49.10?A.B.C.D.E.E50.?A.B.C.D.E.E51:(1)2,?A.B.B.-C.-D.E.-E52.......?A.B.C.D.E.E53.A.B.C.D.E.B54~554ABCD4ABABBDBC1DAABCCBD154.?A.CB.DC.DD.AE.DD55.?A.BB.CC.DD.AE.CA565765303556.6002022:,123456757.7001986127,12873/