The partitioning and regional distribution of 5 trace elements in soils from Yellow River, Yangtze River and Pearl River Deltas were studied.

本文对黄河、长江、珠江三角洲土壤中5种微量元素的形态分配及其地理分布趋势进行了研究。

youdao

S.. China's geography is highly diverse, with hills, plains, and river deltas in the east and deserts, high plateaus, and mountains in the west.

中国的地理状况呈现高度的多样化，在东部有山区、平原和河流三角洲，在西部有沙漠、高原和山地。

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Overseas returnees favor villages in relatively developed Pearl River and Yangtze River deltas where earnings are often similar to those in cities.

事实上,“海归”看中的村官职位大都地处珠三角和长三角发达区域。 因为那里的收入与城市没有太大的区别。

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Densely populated, low-lying areas, such as large river deltas and small islands, are at the greatest risk from flooding.

NPR: In a Strategic Reversal, Dutch Embrace Floods

There is no sign that the Yangtze or Pearl River deltas, or the Beijing-Tianjin corridor further north, are running out of steam.

ECONOMIST: The other China

The region has been unable to match the success of the Yangtze and Pearl River deltas in attracting investment in low-technology, labour-intensive private industry.

ECONOMIST: The other China