The library aims at its social benefit and pursues the lowest cost of the unit profit. The economic analysis shows that increasing invest in library service is feasible and necessary.
图书馆是为社会效益而存在，应追求的是单位收益成本最低化。
The library aims at its social benefit and pursues the lowest cost of the unit profit. The economic analysis shows that increasing invest in library service is feasible and necessary.
图书馆是为社会效益而存在，应追求的是单位收益成本最低化。
应用推荐