2#、3#、4#3G1,G2,G3r1,r2,r3……。3,3#、2#2。:G′1=L″1LG1, G″1=L′1LG1G′2=L″2LG2, G″2=L′2LG2G′3=L″3LG3, G″3=L′3LG2:L—; L′i—3#; L″i—2#; G′i—3#; G″i—2#。Gb′rb′+G1′r1+G2′r2+G3′r3=0Gb″rb″+G1″r1+G2″r2+G3″r3=0Gb′rb′—3#;Gb″rb″—2#。(。):Gb′=2g, rb′=305mmGb″=03#r305mm2g。2 (4):445°,,。,,,,。、,,3#:1860r/min,0.04mm,0.01mm,0.041mm,3(、≤0.03mm),465℃,72h,C6—3.43/0.49。:〔1〕.〔M〕.()..〔2〕,.〔M〕.().,1989.515-516.收稿日期:2002-08-21··不同材质管道的连接方法(中国华西企业一公司,广东深圳518054) (1)。,,,,。(2)UPVC。UPVC;87UPVC。:①,U。DN1001~2mm,100mm。②(1)。(3)。DN15~DN50;DN65~DN100;、、。收稿日期:2001-11-069第6期 郭峰祥等:汽轮机试运转过程中轴振动超标的消除