For conventional elastic materials, which of the following arguments are correct for Poisson’s ratio.A:It is greater than zero. B:It is less than 0.5. C:It is defined as the negative of the ratio between axial and transverse strain under a uniaxial stress state. D:It is a dimensionless quantity. 答案: It is greater than zero.; It is less than 0.5.; It is defined as the negative of the ratio between axial and transverse strain under a uniaxial stress state.; It is a dimensionless quantity.