The results shows that the change of industry structure has nothing to do with the structure of freight quantity, but has causal relationship with the structure of freight turnover quantity.
检验结果表明，产业结构的变化与货运量结构变化没有直接的关系，而与货运周转量结构变化有因果关系。
The results shows that the change of industry structure has nothing to do with the structure of freight quantity, but has causal relationship with the structure of freight turnover quantity.
检验结果表明，产业结构的变化与货运量结构变化没有直接的关系，而与货运周转量结构变化有因果关系。
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