In recent years, not only the sand and dust weather often appears, but also partial sand and dust occurs in city.
近年城市中不仅常常出现沙尘天气，还有局部沙尘频繁出现。
Beijing will suffer between eight to eleven days of sand and dust weather in the upcoming spring, said Guo Hu, head of Beijing Municipal Meteorological Station.
北京市气象台台长郭虎说，预计今年春季，北京市的沙尘天数为8至11天。
The enrichment factor of mainly absorbent element is also high under dust and sand weather conditions.
亲地壳元素中的主成分元素在有沙尘天气时，其富集因子也偏高。
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