(+)Frequency-offset locked loop

20mA current loop

3×5×…×P(k)th(superscript -) order loop b

3D loop

3He loop

3rd order loop filter

4L circular loop antenna near a planar interface

500 kV double loop grid

a fractional-N loop

A Phase Locked Loop

a safety loop

A study on admittance differential loop of brain

a wire loop

abnormity of magnetic hysteresis loop

access spiral loop

accounting loop

active loop

Active Loop Closure Constraint

Active Loop Filter

Active Loop Heat Pipe ALHP