0-diagonally concave relation
Abney mounting for concave grating
absolutely concave function
An are equi-uniformly u0-concave operators
annular concave spherical surface
belt conveyor + concave segment + curvature radius
blade with concave surface
central concave abrasive
characteristic concave or convex of surface
Circular concave sound source
cold extrusion concave die
Combination Concave Die
concave and convex operator
concave and convex property