对公厕和菜场等公共排水区域，采用增设格栅井的方法以解决这些特殊区域污水收集管道易堵塞等难题。
Pipe jacking method could be used to solve the difficulties setting pipeline in bumper-to-bumper traffic area.
对公厕和菜场等公共排水区域，采用增设格栅井的方法以解决这些特殊区域污水收集管道易堵塞等难题。
Pipe jacking method could be used to solve the difficulties setting pipeline in bumper-to-bumper traffic area.
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