Type Alias Dimension 

pub type Dimension = dyn Dimension<Th = Z0, Kind = dyn Kind, L = NInt<UInt<UInt<UTerm, B1>, B1>>, M = PInt<UInt<UTerm, B1>>, I = Z0, N = Z0, T = Z0, J = Z0>;

Dimension of mass density, L⁻³M (base unit kilogram per cubic meter, kg · m⁻³).