主要包括垄断优势理沦、产品生命周期理论、边际产业扩张理论、国际生产折衷理论、投资诱发要素组合理论等。
The main theories include the monopolistic advantage theory , product life cycle theory , internalization theory , the eclectic theory of international production , theory of comparative advantage and factor induced by investment portfolio theory .
投资诱发要素组合理论