Spatial distributive characteristics of urban system is the basis of regional planning and urban planning.
城市体系空间分布特征是从事区域规划、城市规划的基础。
2
Distributive optical amplifier, optical communication station, system and cables.
分布光放大设备，光通信站，光通信系统和光缆。
3
The paper also shows a distributive numerical control system, as a method to solve product quality and production efficiency problems existing in the domestic PCB factories.