2. Design and simulation of protection signal detection circuit (word count: 1 1657, page count: 30)

3. Symmetry of quantum microscopic system (word count: 8978, page count: 23)

4. Characteristic analysis and application of light absorption in solids (word count: 8253, page count: 20)

5. Electronic cloud phenomenon of residents' travel distribution (word count: 9629, page count: 24)

6. Discussion on the motion of dry friction spring vibrator (word count: 72 17, page number: 24)

7. Research on shielding electromagnetic radiation by metal mesh of computer case (words: 6986, 27 pages)

8. Explanation and expression of uncertainty in error theory of physics experiment (word count: 9080, 23 pages)

9. Investigation on electromagnetic status of multi-wireless routing home environment (word count: 7978, page number: 23)

10. Design of electronic lock for fingerprint identification (word count: 14896, page count: 38)

1 1. Processing and representation of measurement data in basic physics experiments (word count: 6848, page number: 19)

12. Discussion on the adjustment of optical instruments in college physics experiments (word count: 10943, page number: 18)

13. Application of multivariate statistics in financial processing (word count: 7479, page count: 22)

14. Design of FIR filter based on MATLAB (word count: 9779, page count: 30)

15. Numerical simulation of a kind of SI model with stage structure (word count: 8033, page number: 17)

16. Numerical simulation of an epidemic model with proportional infection rate (words: 6782 pages: 2 1)

17. Hazards, monitoring and prevention of smoke and dust emission from enterprises (word count: 13460, page number: 27)