摘要专利间的引用关系是研究技术溢出的重要途径之一，为分析技术知识的流动提供了客观的测度依据。
Abstract: Patent citation is an important approach for the technology spillover study, and is the measuring foundation for technical knowledge flow analysis.
国际贸易理论的研究范围也包括生产要素的国际流动和技术知识的国际传递。
International trade theory research scope including production elements of the international movement and technical knowledge international relay.
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