(piston) ring

(semi-)prime ring

(stong) regular ring

[A ring-U-~(14)C]Pyribambenz-propyl

[A ring-U-~(14)C]ZJ0273

[A ring-U-14C]-pyribambenz-propyl

“O”ring gasket

0-ring

1 550 nm fiber-optic ring network

10 kV ring

10 kV ring main unit

10-membered ring hydrogen bond

13-membered ring hydrogen bond

14-membered ring

170-millimeter-thick ring plate

18-18 steel for retaining ring

18-5 steel for retaining ring

20mA current ring

250B bearing ring rolling machine

2-ring MDI