但是中国城市航空网络展现出明显的层次性，表明地理因素对其结构演化的影响并不强烈。
However, the present network displays an obviously hierarchical property, which proves that the geographical ingredient may have no effect on the structural evolution of Chinese city airline network.
研究表明，中国城市航空网络是一个小世界网络，具有短的平均路径长度和大的簇系数，且其度分布服从双段幂律分布。
The present network is a small-world network with short average path length and high degree of clustering, and its degree distribution follows a double power law.
研究表明，中国城市航空网络是一个小世界网络，具有短的平均路径长度和大的簇系数，且其度分布服从双段幂律分布。
It is shown that the present network is a small-world network with short average path length and high degree of clustering, and its degree distribution follows a double power law.
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