Base on observation of cores and analyzing data of grain size, the probability cumulative grain size curves in the main sedimentary environments of the Tertiary in west Qaidam Basin were summarized.
在岩心观察的基础上，利用主要取心井的粒度分析资料，对柴达木盆地西部地区第三系碎屑岩主要沉积环境的粒度概率曲线进行了研究。
The plain of North Henan, which is the main industrial base of energy, metallurgy, spinning and weaving, is an important production area of grain, cotton and oil-bearing corps, etc.
豫北平原是河南省重要的能源、冶金和纺织等工业基地，也是粮棉油料作物的主要产区。
The western area of Dongting lake is one of the main marketable grain base in our country, and an important marketable base for pork, reed hemp and the freshwater aquiculture.
东洞庭湖区是国内主要商品粮基地之一，也是国内重要的牲猪、芦苇、苎麻商品基地和举足轻重的淡水品养殖基地。
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