"heterogeneous composition" is a correct and usable phrase in written English.
You can use it to refer to a group or mixture that is composed of multiple elements that are not all of the same type or kind. For example: "The company's staff is a heterogeneous composition of men, women, and people of different ethnic backgrounds."
"Heterogeneous Composition of Models of Computation".
Taking the heterogeneous composition of this network results in a single, homogeneous, tagged system.
Owing to its heterogeneous composition, plastic lumber is inherently weaker than the original polymers.
The molecular organization of and mechanistic events that take place in the PLC are unknown owing to the heterogeneous composition and intrinsically dynamic nature of the complex.
TEM/EDS observations on non-corroded samples evidenced the heterogeneous composition within the IMs.
The machine is marked by its intensity, heterogeneous composition, and its odd syntax, in which annotations are made with crude graphics, and arguments are made in the raw language of Internet forums.
Tsunami unit B and the Abrigo breccia share the same heterogeneous composition (basaltic and phonolitic lavas, hydrothermally altered lavas, syenites, obsidian, crystal-rich juvenile clasts), but the tsunami gravel is matrix supported and cemented by carbonates.
Recycling automotive waste is very tedious and difficult due to its heterogeneous composition and nature.
Skin is a difficult tissue for automated image analysis due to its heterogeneous composition and its architecture.
Major impediments for structural and biophysical studies of peptide self-assemblies include their insolubility and heterogeneous composition.
This test has been successfully used to detect differences between products with variability induced by production, preparation or heterogeneous composition.
