active Fe 3+

Active-Active

active-active transient mode-locking technology

[Fe-Fe]hydrogenase mimic

cleavage of Fe-Fe bond

Fe-Fe bond

Fe—Fe bond

NiZn-Fe(Ⅱ)-Fe(Ⅲ)SO4 hydrotalcite

active or semi-active suspension

Fe-doped chemical manganese dioxide(Fe-CMD)

Prussian blue Li and Fe derivate(LiFe[Fe(CN)6])

~(59)Fe-magnetic iron oxide(~(59) Fe-SUMR)

(active) contour model

(active)energy meter

2nd-Order Active Filter

302-A special active carbon for removing red-lustre

3-phase 4-wire active power filter

5th seismically active period

9-anthracene active substitute compounds