三、生产项目组合的边际分析 ()生产项目间的相互关系 oint products Joint products are where one enterprise produces two products which are virtually interlinked e. g beef cattle produce hides and meat dairy cows produce milk and calves cereals produce grain and straw oilseed rape produces oil and rape meal三、生产项目组合的边际分析 （一）生产项目间的相互关系 Joint products •Joint products are where one enterprise produces two products which are virtually interlinked e.g.: •beef cattle produce hides and meat •dairy cows produce milk and calves •cereals produce grain and straw •oilseed rape produces oil and rape meal