a	thickness of removal material
c	the distance between the passes of the electrode tool
D	diameter
j	electrical current density
i	electrical current intensity
n	localization factor
Q	electrical charge
q	charge density
S	interelectrode gap thickness
S 0	initial interelectrode gap thickness
SL	limiting interelectrode gap thickness
T	temperature
t	time
ti	voltage pulse time
tp	pause time between voltage pulses
U	interelectrode voltage (electric potential)
Vp	volume of material removed during one pulse
vn	dissolution speed (ratio)
vf	electrode tool feed rate
ηkv	electrochemical machinability
κ	the electrolyte electrical conductivity
ECM	Electrochemical Machining
ECMM	Electrochemical Micro Machining
PECM	Pulse Electrochemical Machining
PECMM	Pulse Electrochemical Micro Machining
UR	Unit Removal