At last, the push and pull theory is introduced in this part.
分析了推力—拉力理论在分析人口迁移过程中的作用。
Comparing the expant supply chain modes, this paper supplied a new push-pull supply chain mode which combined the theory of the reverse supply chain.
通过比较目前运作的供应链管理模式，结合逆向供应链理论，提出了一种新的推—拉结合的供应链运作模式。
Based on the push-and-pull theory, this paper analyzes the factors that influence the final realization of the mid and low class's flexible employment.
本文运用推拉理论对影响中低层灵活就业群体最终实现就业的因素进行分析。
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