quadric expression造句

例句与造句

1. Thus the density function is a scalar-to-scalar transformation of a quadric expression.
2. Moreover, the equation for any iso-density surface states that the quadric expression equals some constant specific to that value of the density, and the iso-density surface is an ellipsoid.
3. It's difficult to find quadric expression in a sentence. 用quadric expression造句挺难的