In this paper, we develop a two-period model in which a producer decides to sell or rent his durable good having a nondurable good.
文章建立了一个两期数学模型，其中一个耐用品厂商有可能还拥有一种非耐用品。
2
Along with population increase, they to the grain, the non-staple food product as well as the nondurable consumer goods quantity's demand increase unceasingly.