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leiwanjun 发表于 2010-4-4 23:11

hi,I'm a newer.

My name is leiwanjun,I come from chengdu,sichuan.I am working in CHIDI,engaging in the hydropower design.

xln1120 发表于 2010-4-5 08:11

欢迎LZ入住听力室论坛

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