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leak stopping
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leak stopping
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leak stopping
堵漏
采用不同的挤堵方法,将水泥或复合化学堵剂以一定的压力和排量挤入破漏管外,并在管内留有一定长度的堵塞,从而封堵套管破漏的作业过程。
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urban rail transit
urban rail transit bridge
urban rail transit combined sewerage system
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urban rail transit construction planning
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urban rail transit feasibility study
urban rail transit gauge
urban rail transit network planning
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Urban rail transit platform
urban rail transit regulatory planning
Urban Rail Transit Sidings(auxiliary lines)
urban rail transit signal
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urban rail transit turnout
urban rail transit vehicle
urban rail water supply and drainage system
urban rail water supply for fire protection and extinguish fire
urban rank-size rule
Urban Reformin
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