which city is Chinese optics city? Shanghai or Changchun-光学设计及经验-光行天下-最大的光电技术社区-光学,光电,光机技术及其软件运用交流社区!

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alva	2009-04-21 01:10
which city is Chinese optics city? Shanghai or Changchun which city is Chinese optics city? Shanghai or Changchun

legendlyy	2009-04-21 08:46
Neither

石英	2009-04-21 11:44
Changchun-ciom

desertegg	2009-05-31 20:49
wuhan???

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