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(,563000)ULTRASONICINSPECTIONOFTHECYLINDEROFABALLMILLHEAn2pin(ZunyiThermalPowerPlant,ZunyiGuizhou563000,China):TG115.28:B:100026656(2002)11205042021199810,380P720,117.284t,85t,202184t,45tPh,4016mm,7670mm,11300mm,32mm,Q2352A()41mm,35,1120007,(),2010mm,1500mm,20011,1200mm,2mm,11:2001207206,,,,Q2352A,35,Q2352A;Q2352A,,,(21,34),,21,,[1],,[2],,,,,,2HS400;()2.5P1313K12.5P1313K115[3];JB11521981,CSK2A4052411200211NDTVol.24No.11Nov.2002©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.CSK2A;21mm6mm-9dB;1mm6mm-3dB,1mm6mm+5dB;-4dB[4];K31(),1,20mm,,,,,,,,,,,,,[1],,[5],4,,,,,,,,,:[1].[M].:,1998.[2]DLPT50071992,()[S].[3].[M].:,1994.[4]JB11521981,[S].[5]JB47301994,[S].(493)6,,,(9)(10)3M3DPS2.1[7],MMMT,,:[1],.[J].,2000,22(7):297.[2],.NDTEMS2000[J].,2000,24(3):32.[3],.21NDT[J].,2000,(9):44.[4],.[J].,2000,29(5):42.[5],,.[M].:,2000.[6].BorlandC++4.0[M].:,1994.[7],.[A].[C].:2002.52.505:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.