This year the city plans to add 30km of cycle lanes, to double the number of public bikes and add another 72 docking stations.

今年，项目打算增加30千米的自行车道，再增加一倍的公共自行车和72个存车点。

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There are many types of structures of double acting pumps and pumping stations which have different technique and economic characteristics.

分析了国内外现有双向功能泵组及泵站的结构型式，进行了技术经济比较。

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Also, this paper introduced the structure and setting of double relay stations in single frequency point and multi frequency point network.

除采取防雷措施外，论文针对该问题提出了双中继组网的方案，并介绍了单频点组网和多频点组网中双中继的构成和设置。

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Also, this paper introduced the structure and setting of double relay stations in single frequency point and multi frequency point network.

除采取防雷措施外，论文针对该问题提出了双中继组网的方案，并介绍了单频点组网和多频点组网中双中继的构成和设置。

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