首先对电子工具书的内涵与外延进行细致的界定，其次归纳出电子工具书的不同类型，再总结出电子工具书相比于传统纸质工具书有哪些特点与优势。

Followed by detailed the definition and extension of thee-reference book at first, the paper sums up the different types and advantages of them by comparing to the traditional reference book.

youdao

首先对电子工具书的内涵与外延进行细致的界定，其次归纳出电子工具书的不同类型，再总结出电子工具书相比于传统纸质工具书有哪些特点与优势。

Followed by detailed the definition and extension of thee-reference book at first, the paper sums up the different types and advantages of them by comparing to the traditional reference book.

youdao