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        1. 典型項目

          •概況:規劃區面積4.06km2,管廊長5.2km,總投資1.79億;
          •技術特點:
           
          ①通過高壓線纜化新增22萬m2用地;
          ②采用雙橡膠圈承插式預制拼裝工藝,為國內最早采用該工藝的管廊。

          2020天天干天天_黑人毛片特级AAAA_a级毛片100部免费看_h无码精品动漫免费看
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