新概念英语第3册第9课

1720074,,,,,(,710038):,,,,:;;;:V35:A:167223953(2007)04200172041982(),,,,,,(ICAO)[1],20018,(),,,,1,:;,,,,:,,,22.1:;:,,2.2,,100m100m,,2.32.3.1,:200m,300400m,200300m;,,[2],,[3],100m2.3.2,13,150m152km,,;ResearchandDesign1820074100m()15%3km15%,3km9.333km,2km6km6km,6km,1(:m)2(:m)3(:m)20km,30km10km,30km,20km,2.3.31500m,1/1001/75,15m20m100m,6m,1600m7m205m210m,5m,4,,4(:m)300400m,,200300m[4],1500m,78m1500m,911m,7.5km6km5km10km8km5.5km5km,,78m15m2327m,,5,,,5(:m)3000m,5000m2000m,,1/100,30m,3000m12m,,5000m,12m2122m,5000m,2224m,6,,,2.42.4.1,,150m19200746(:m),1/251/10,,,[5]2.4.2,,,,,,,,,2.4.3,,,,,,,45m60m2.4.4,,,,,,,,,,2.4.5100m,150m(1)1/251/10,60m,45m15m,,15m,1/251/20,,210m,165m45m,45m,7,15m45m,,7(:m),,,500m,,(2),,,,,15m,,1/30,1/50;13100m,,(8)17000m,15000m45m8(:m)2020074(3),,5m,,1/30,,1/50,9,,,,,1/501/309(:m)3,,,,,,[1].MH50012006[S].2006[2],[M].:,2002[3],,,.[J].,2004,4(4):40243[4],,,.[J].(),2005,6(6):123[5],,,.[J].(),2007,8(1):11213(:2007207213)AnalysisoftheDifferenceandComparisonBetweentheCurrentRuleandtheOldOneinAirfieldClearanceCAILiang2cai,HAOWei,SHAOBin,ZHENGRu2hai,CHONGXiao2lei,WANGGuan2hu(SchoolofEngineering,AirForceEngineeringUniversity,Xian710038,China)Abstract:Intheprocessofusingthemilitaryairfieldregulationsinclearance,sincetheusermayconfusethecurrentrulewiththeoldone,thepaperanalyzesandcomparesthedifferencesbetweenthecurrentruleandtheoldoneinclearance,withspecialemphasisplacedontherevisedpartsofthebasisprinciples,thecompositionoftheclearancezonesandtheobstaclelimits.Thecomparisonmaygreatlyhelptheusertocorrectlyunderstandandapplythecurrentrule.Keywords:airfield;regulationsinclearance;obstaclelimits;flightsafety,