19993656HG/T20570.19.954.0.1.2,,(),,,,:1,()(),,,,(),,,,(,),(),;(),,,()(),(),,,,,,,,1.1(1)(),,(),,,(2),,,(),(),,,(,100029)(,100011)©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1),,,,,(2),,,,,,(3),,,,,,1.3(1),,();,HG/T20570.19-954.0.1,ABC(),,,(2):,11,,()3000m/s,,©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,,(),,()200m/s450m/s(2):,2,,()2200m/s,2:,,,,()80m/s,45m/s,,2,,,,(),(),,,;,,;,(),,©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.