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线路平面控制网
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线路平面控制网
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线路平面控制网
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line plane control network
线路平面控制网
在基础平面控制网基础上,沿线路附近布设,采用卫星定位测量或导线测量方法施测,为勘测、施工阶段的线路平面测量和轨道控制网测量提供平面起闭的基准。简称CPⅡ。
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hydrological effect of forest
hydrological effect of reservoir
Hydrological effect of urbanization
hydrological effect of water transfer
hydrological elements
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hydrological geodesy
hydrological inscription in ancient China
hydrological management system in China
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hydrological process of wetland
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hydrologic archives management
hydrologic atlas
hydrologic cableway measuring control device
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