1. Baidu Library: The advantage is that the collection is large, and there are many paper templates to find; The disadvantage is that the search results are inaccurate and need to be screened by yourself.

2.Google Academic: The advantage is that the search accuracy is high, and the results directly present the paper template; The disadvantage is that the number of items is small.

3. HowNet: The advantage is that it has a large collection, and related papers can be found in addition to paper templates; The disadvantage is that there are fewer free functions.

Brief introduction of China HowNet.

China HowNet has developed into an international advanced online publishing platform integrating periodicals, doctoral dissertations, master's dissertations, conference papers, newspapers, reference books, yearbooks, patents, standards, Chinese studies and overseas literature resources through cooperation with periodicals, publishing circles and various content providers. The website of the Center is updated with more than 50,000 documents every day.