其次，从理论方面论证川渝经济圈形成的必要性和可能性，主要运用比较优势和竞争优势的理论进行论证。
Secondly, the paper proves the necessity and possibility of Sichuan-Chongqing Circle forming from the point of the comparative advantage and competitive advantage theory mainly.
两个地区自然资源比较优势明显的行业、市场需求大的行业技术进步较快，技术进步促进了川渝经济圈的形成。
The technological progress of the industry trades develop faster that have the resource advantage and marketing demand, which accelerate the forming of Sichuan-Chongqing Circle.
方法扫描电镜下比较观察川渝商品金银花原植物叶背特征。
MethodsThe scanning election microscope (SEM) was used to compare the characters of the original plant leaf lower epidermis of the commercial Flos Lonicera.
川渝区入境游客满意度由高到低依次为：大洋洲游客(7.36)、北美游客(7.17)、亚洲游客(7.10)和欧洲游客(6.52)，都属于比较满意的范围。
Each district arrivals satisfaction from high to low is as follows: the Oceania, North America 7.36 visitors 7.17, Asian tourists 7.10 and European tourists 6.52 visitors satisfactory.
川渝区入境游客满意度由高到低依次为：大洋洲游客(7.36)、北美游客(7.17)、亚洲游客(7.10)和欧洲游客(6.52)，都属于比较满意的范围。
Each district arrivals satisfaction from high to low is as follows: the Oceania, North America 7.36 visitors 7.17, Asian tourists 7.10 and European tourists 6.52 visitors satisfactory.
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