The conception of the apex city of delta belongs to the field of economic geography, which is put forward based on the city location and the natural environment evolution of delta.

三角洲顶点城市是基于城市区位和三角洲自然环境演变特征而提出的经济地理概念，此类城市的存在具有一定的广泛性。

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This little-known city in the Pearl River delta makes 30% of the magnetic recording heads used in hard drives across the world and 16% of the world’s electronic keyboards.

这个珠江三角洲畔籍籍无名的城市，制造了全世界30%用于硬盘驱动器的录音磁头，全球16%的电子键盘。

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She says the WFP plans to provide emergency assistance to 11 townships in the Irrawaddy Delta and eight townships in the main city of Rangoon.

她说，世界粮食计划署计划向伊洛瓦底江三角洲的11个乡镇以及缅甸主要城市仰光周围的8个乡镇提供紧急援助。

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Three Brotherhood offices were ransacked by mobs in another Cairo neighborhood, in the second-largest city of Alexandria and in the Nile Delta city of Mahalla.

NPR: Egyptians Clash At Muslim Brotherhood Offices

They also torched a Brotherhood office in the Nile Delta city of Mahalla, a security official said.

NPR: Egyptians Clash At Muslim Brotherhood Offices

There's an Arkansas National Guard medevac unit at Camp Delta just outside the city of Al Kut on a bend of the Tigris river about 60 miles south of Baghdad.

NPR: Adrenaline Flows When Medevac Unit Takes Flight