force-penetration curve
Particle penetration curve
shallow penetration curve
curve-curve intersection
transition curve；easement curve；spiral transition curve
approach to curve by curve
continuous cooling transformation curve CCT curve
C-V curve (capacitance-voltage curve)
operating characteristic curve OC curve
time-distance curve (=travel-time curve)
travel-time curve (=time-distance curve)
uniformly tangent non-uniform corner cutting curve (UNC curve)
3D location with bilateral electrical penetration
Ability to resist chloride ion penetration
accumulative penetration amount
adhesive penetration rate