quality choice造句

• In this paper we set up a vertical product differentiation model to explore the relationship between the home government's quality-related r & d subsidy and the product quality choice made by the domestic firm, without making assumptions concerning home product positioning relative to imports
  摘要在贸易政策中，一般讨论品质内生化的论文大都假设本国厂商为高品质产品生产者或低品质产品生产者后进行分析，本文并不作此限制。