an eye for an eye and a tooth for a tooth
briar tooth (gullet-tooth)
scanning tooth by tooth
tooth-to-tooth proportion
Longitudinal stiffness and transverse stiffness
positive stiffness and negative stiffness
ratio of dynamic stiffness and static stiffness
2-grade deceleration straight-tooth gear box
3D tooth movement control
a new type of oscillating tooth gear transmission
abrasion value of tooth surfaces
acute wisdom tooth pericoronitis