Sandstorms is one of the major natural disasters in north China region.
沙尘暴是我国北方地区的主要自然灾害之一。
The method is applied to estimate the seismic occurrence rate in North China region.
该方法被应用到估计华北地区地震发生的概率密度。
In Cangzhou City of north China region Pipe professional production of large enterprises.
沧州市华昊钢管有限公司是华北地区专业生产钢管的大型企业之一。
This method of fertilizing can be used in the cold region in North China.
可作为北方寒地稻作区的施肥技术。
This method of fertilizing can be used in the cold region in North China.
可作为北方寒地稻作区的施肥技术。
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