1 Subjects: “...mechanical patent classification...”

2 Subjects: “...Fluid Mechanics...”

3 Subjects: “...evolution mechanism...”

4 Subjects: “...continuum damage mechanics...”

5 Subjects: “...rock mechanics...”

6 Subjects: “...synergy mechanism...”

7 Subjects: “...mechanism...”

8 Subjects: “...agricultural mechanization...”

9 Subjects: “...attention mechanisms...”

10 Subjects: “...attention mechanisms...”