backbone projects meaning in English

骨干工程

As a cooperative program in superiority supported by the state communications and information technological branch committee , the china - russia fiber optic backbone project was activated in 2004
中俄光缆干线项目作为国家通信与信息技术分委会确认并支持的优先合作项目，已在年内成功启动。
Model sywly - 75 physics high to foam polyethylene insulating , aluminum pipe other conductor coaxial cable suitable for catv backbone project , its interior conductor adopt bastion of iron make aluminium , other conductor adopt aluminum pipe , the two have the same hot coefficient of expansion and modulus of elasticity , woods reduce in cable conductor draw the troubles that are led to the fact
Sywly - 75型物理高发泡聚乙烯绝缘、铝管外导体同轴电缆适用于catv主干线工程，其内导体采用铜墙铁壁包铝，外导体采用铝管，两者具有相同的热膨胀系数和弹性模数，林减少了由电缆内导体拉拔所造成的故障。