摘要：The aim of this paper is to adjust the existing believe on the condition that a Rotatable
Orthogonal Central Composite Design can be created from an Orthogonal Central
Composite Design. Therefore the appropriate introduction is discussed concerning the
Rotatable Orthogonal Central Composite Design. Then, the main result is presented,
i.e. The necessary and sufficient conditions in order an Orthogonal Central Composite
Design to be Rotatable.
关键词：rotatable design; orthogonal design; central design; composite design;
