CFRP	Carbon fiber reinforced polymer
Fx	Normal force in the x direction
Fy	Feed force in the y direction
Fc	Cutting force (N)
$\varnothing$	Engagement angle (°)
α	Rake angle (°)
U	Specific energy (Nm/mm3)
vc	Cutting speed (m/min)
s	Spindle speed (rpm)
SS	Total sum of squares
ANOVA	Analysis of variance
CNC	Computer numerical control
R2-adj.	The percentage of variation explained by only the independent variables that actually affect the dependent variable.
ρ	Density (g/cm3)
C	Heat capacity (J/g-C)
K	Thermal diffusivity of work material (mm2/s)
T	Temperature rises at tool-chip interface (°C)
α	Thermal conductivity (j/s-mm °C)
$C\rho$	Specific heat (j/mm3-C)
MRR	Material removal rate (N-m/mm3)
ap	Depth of cut (mm)
DF	Degrees of freedom
MS	Mean of squares
µ	Micrometer
R2	The correlation between the predicted values and the observed values