1st Class or 2nd Class Control

angle Class Ⅱand skeletal class I malocclusion

Class Ⅰ and Class Ⅱ highways

Class A and class B infectious diseases

Class I and Class II

∨-semilatticed amenable partially ordered complete

2-cyclic consistently ordered matrix

3D ordered structure

abstract ordered simplicial complex

address-ordered

charge ordered state

charge-ordered

consistently ordered matrix

continuous ordered space

convex sublattice ordered gro-up

crystal ordered material characteristics

DO 3 ordered structure

Earthquakes ordered distribution

extended ordered weighted averaging EOWA operator

Highly ordered