【化】 nuclear substituted; nucleus substituted; ring substituted
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-
replace; substitute; permute; supersede; supersession; substituent; superlant
【化】 permutation; substitution
【医】 substitution