不同类型的成本项目对数字图书馆建设和运作的重要性不同，他们之间的相关性也不同。

Different types of cost play different role in the construction and operation of digital libraries, and the correlation between them is also different.

youdao

不同类型的成本项目对数字图书馆建设和运作的重要性不同，他们之间的相关性也不同。

Different types of cost play different role in the construction and operation of digital libraries, and the correlation between them is also different.

youdao