Appurtenant work, which supplies a system of function as management, charge, monitoring, maintaining, rescue and service, is a major component part of expressway.

  • 附属区工程是高速公路重要的组成部分,是为了高速公路的正常通行提供管理、收费、监控、养护、拯救、服务等一系列功能。

  • 互联网摘选 2025-01-19 23:26:17

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