It makes use of the technique of overall databases, which can entirely record the spatial 3d state of the underground pipeline network.
在国内率先采用全数据库技术，可完整记录地下管网的空间三维状态。
It makes use of the technique of overall databases, which can entirely record the spatial 3d state of the underground pipeline network.
在国内率先采用全数据库技术，可完整记录地下管网的空间三维状态。
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