Page 30 - 《金属管》178期电子杂志
P. 30

1111.ilQII




                            ®:5f4t~f:\'zr::tt~:f:t~t~~~Iftlm 1R,  ~i!:1'A~,~~,  tiU~ ,  pf"LlJ~Bxff~f=t\WL
                        EE!.i9:SE0i9:it,  1M@,  ~-imirtfDt~#mH~-,  ~:1Jr~fflPt*{tk~;illZE0f=~ffi~,j;1;5.,  ~
                        BPmm~il:EB~rI~5•&~r~m~~Bxff •• , f=~%€~D~~~,~~E,
                        ~~~,±~R,W~,E&~@,$~~§~,ff~,fi~~~~~&g~~IRo
                            ftffJJ!J:.l.  ":f:'tM~>J<:1'~#~~,,  a~fflMi,  ~m~ ffi~,~~f=xi~,  1*/as:J~rt1$1*1:tt~
                        {IB~f=~fD~&z.~ o


































































                                           Lil iffi ~r.i M-ti fl~-~ii]
                                           ±tl!J.tl::  LlJe:§::t:JJR:;;r-;iii~Jikim IRCIR 1 "5   13994247235
                                           f~~=  0351-5270546  lllBfi@":  oufangtech@163.com
   25   26   27   28   29   30   31   32   33   34   35