求翻译：需求偏好理论的主要代表是林德，其理论内容：企业生产的决定因素不是成本而是需求和市场；出口市场的形成是因为与国内市场相似；人均收入水平决定需求偏好和需求结构，进而决定贸易。是什么意思？

Preference theory of demand is the main representative of Linde, its theoretical content: determinants of production costs but not the demand for and market; export markets because of the formation is similar to the domestic market; per capita income levels demand preferences and demand structure, a

High demand is Good theory, the main representative, its theoretical content: enterprise production cost is not the determining factor; export market demand and market but the formation of a similar because the domestic market demand; level of per capita income decided preference and demand structur

Demand theory main representative is Linde by chance, its theory content: The enterprise produces but the determining factor is not the cost is the demand and the market; Exports the market the formation is because and the domestic market is similar; Per capita national income level decision demand

Theory of demand preference is the main representative of Linde, its theoretical contents: determinants of production are not costs but demand and market; formation because of export markets and domestic market is similar to per capita income levels determine demand preference and demand structure,

The main representatives whose demand has a partiality for the theory are Lin De, its theoretical content: The decisive factor of enterprise's production is not cost but demand and market; The forming of the export market is because of similar to domestic marketting; Per person's income level decide