Does Airport Preferential Policy Aggravate the Competition of Aviation Hubs in Central and Western China? Based on the Investigation of 78 Airports

<div>False experiment of cargo throughput at Xinzheng Airport. (a) The maximum weight and (b) the area with zero weight.</div>

Mathematical Problems in Engineering

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Figure 3: Does Airport Preferential Policy Aggravate the Competition of Aviation Hubs in Central and Western China? Based on the Investigation of 78 Airports 

Figure 3 | Does Airport Preferential Policy Aggravate the Competition of Aviation Hubs in Central and Western China? Based on the Investigation of 78 Airports 