It's the trend that SDH will replace PDH in building information highway.
代替pdh的传输体制是高速信息公路的建设的未来趋势。
The access-network is necessary in the construction of the information highway.
信息公路要有接入网配套。
The public traffic and information highway system are mainly illustrated. The projects of building up a nice image and making green public transportation greener are introduced.
重点对北京奥运会的绿色公交工程中的快速公交及信息高速体系、树立良好公交形象战略、使绿色公交更加绿色化等方面做了设想。
The public traffic and information highway system are mainly illustrated. The projects of building up a nice image and making green public transportation greener are introduced.
重点对北京奥运会的绿色公交工程中的快速公交及信息高速体系、树立良好公交形象战略、使绿色公交更加绿色化等方面做了设想。
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