1, general word range: the number of words in the abstract of undergraduate thesis is generally between 260 and 300 words. The number of words in the abstract of a master's thesis is generally between 500 and 600 words.

2. Specific word requirements: the abstract of undergraduate graduation thesis should not exceed 300 words. The number of words in the master's thesis abstract is between 300 and 500.

3. The number of words is not uniform: the number of words in the abstract of undergraduate thesis is between 300 and 500, and the number of words in the abstract of master thesis is between 500 and 600.

4. Specific requirements: the abstract of undergraduate thesis is about 300 words, and the abstract of master thesis is about 500 words.