【化】 nuclear fluorination
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
ascending; go to; go up; previous; submit; superior; upper
【医】 ept-; hyper-; super-; supra-; sur-
fluorine
【化】 fluorine
【医】 F.; fluorine
era; generation; take the place of
【电】 generation
feedback; reaction; response
【医】 reaction; response