The phrase "a combination of characteristics" is correct and usable in written English.
It can be used when describing a set of traits or features that come together to form a particular quality or identity.
Example: "The new product is a combination of characteristics that make it both user-friendly and highly efficient."
Alternatives: "a blend of traits" or "a mix of features."
The House of Lords was having none of it and concluded that an ethnic group could be a distinct community with a combination of characteristics, apart from skin colour.
Out of a combination of characteristics of the Monitor and Virginia types evolved the battleship, which was next to rule the sea.
As soon as a combination of characteristics (scenarios) arises, we already know intuitively what the consequences are and which countermeasures we have to initiate.
Phytoplankton groups may be distinguished from each other based on a combination of characteristics, including photosynthetic pigments, shape, size and cell covering.
The new ant is named Martialis heureka, which translates roughly to 'ant from Mars,' because the ant has a combination of characteristics never before recorded".
The odds-ratios indicate the relative odds of under-reporting casualties with a combination of characteristics, to under-reporting casualties with the reference groups' characteristics.
The presence of liver cirrhosis was defined by a combination of characteristic clinical (ascites, caput medusae, spider angiomata, etc)., laboratory and radiological findings (typical morphological changes of the liver, sings of portal hypertension, etc., in ultrasonography or computed tomography scanning), or via histology, if available.
However, by using a combination of characteristic fragmentation pattern of IPC's and stringent data processing, we could focus specifically on IPC molecular ions.
After confirming the diagnosis of PAP either by a combination of characteristic CT scan and BAL findings and trans-bronchial or open lung biopsy, it is important to determine the etiology of PAP.
