1 Subjects: “...floating ring bearing...”

2 Subjects: “...impulsively generated viscous vortex ring...”

3 Subjects: “...ring-type cutoff probe...”

4 Subjects: “...concentric-ring analysis...”

5 Subjects: “...ring network...”

6 Subjects: “...tree-ring analysis...”

7 Subjects: “...ring damper...”

8 Subjects: “...diamond-ring slot...”

9 Subjects: “...ring opening...”

10 Subjects: “...vortex ring...”

11 Subjects: “...photon rings...”

12 Subjects: “...rose-ringed parakeet...”