文章最后研究了物流产业集中度的合适范围，以及提高物流产业集中度的途径。
At last, the article studied the suitable range and the improving route of the concentration degree of logistics industry.
并分析绝对集中度和赫佛因德指数在测算该产业的市场集中度时能够相互补充和验证。
Concentration degree and Herfindahl Index can be mutually complementary and verified in measuring market concentration degree of expressway industry.
运用产业组织相关理论、集中度系数、赫芬达尔—赫希曼指数、洛伦茨曲线和基尼系数分析了我国农机工业集中度现状。
Based on the theory of Industry Organization, the paper uses the Concentrative Ratio, Herfindahl-Hirschman Index, Lorenz Curve and Gini Coefficient to analyze AMM's concentrative degree.
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