Delta ring

Numerical Solutions of Green 's Function for Low-Frequency Electrode-Type Delta Ring

低频电极型δ环格林函数的数值解

As the high level of urbanization in east coastal economy developed area , there has been the Yangtze river delta , Bohai ring megalopolis and the Pearl river delta .

在东部沿海经济发达地区，由于城市化水平较高，形成了长江三角洲城市群、环渤海城市群、珠江三角洲城市群。

China industry cluster mainly centres in Pearl River Delta , the Changjiang Delta , ring Bohai Sea Gulf and the south of Fujian Province area .

我国产业集群主要集中在珠江三角洲、长江三角洲、环渤海湾和闽南地区。