The phrase "at different combinations of" is correct and usable in written English.
It can be used when discussing various arrangements or groupings of elements, often in contexts like experiments, data analysis, or problem-solving.
Example: "The study examined the effects of the drug at different combinations of dosage and frequency."
Alternatives: "at various combinations of" or "across different combinations of".
"We're looking at different combinations of people".
Further, ratcheting experiments were carried out at different combinations of mean stress and stress amplitudes.
The separation behaviour was studied at different combinations of frequencies and dimensionless accelerations.
"Now, we're looking at different combinations of places and training techniques, and there have been discussions about South Texas as an appropriate location".
The nanoparticles were prepared by ionotropic gelation using tripolyphosphate (TPP), at different combinations of chitosan (CH) concentration, CH TPP ratio and GA.
Previous studies on vibration training have all been based on protocols at different combinations of frequencies and amplitudes without controlling the loading intensity.
The dependence of corrosion behaviors at different combination of c.d. and p.d., on surface morphology, composition and phase structures were analyzed, using scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS) and X-ray diffraction (XRD) technique, respectively.
The D-values for BL21 DnaK and BL21 in LB medium at different combination of temperature and pH-value ranged from 16.15 to 8.72 min and from 14.08 to 5.2 min, respectively.
The clips can also be rearranged at will; different combinations of scenes can be tried until the movie feels right.
Depending on the application at hand, different combinations of yes/no may be considered rational.
PMB samples were produced by mixing a 160/220 penetration grade base bitumen with 4% SBS Kraton D1101 copolymer at 18 different combinations of three mixing temperatures, three mixing times and two mixing rates.
