【化】 plastic O-ring
【化】 plastic; plastics
【医】 plastic
appear; body; compare; entity; form; look; shape
【医】 appearance; morpho-; shape
annulus; hem in; link; loop; ring; surround
【计】 ring up; toroid
【化】 ring
【医】 annuli; anulus; band; circle; circulus; cycle; cyclo-; gyro-; loop; orb
ring; verge