"supplementary experiment" is correct and usable in written English.
You could use it when referring to an additional, additional test or investigation done to support or supplement a primary study or experiment. Example sentence: "We conducted a supplementary experiment to verify the accuracy of our results."
The effect of milling particle size was also examined in a supplementary experiment.
A supplementary experiment on decane indicates that the formation via single step rearrangement of the parent molecule is not likely.
To further confirm motor-related dentate activation, a simple finger movement task was tested in a supplementary experiment using ultra-highfield (7 T) fMRI in 23 participants.
A supplementary experiment in which MVC pronation torque at different articulations was measured showed that some of the increased discomfort appeared to be due to increased relative MVC at some of the extreme articulations.
The results of the supplementary experiment show the same pattern as the behavioural data from the main experiment.
The purpose of this supplementary experiment was to test further whether retro-cues elicited some time-consuming switch process.
Results from a supplemental experiment (Supplementary Fig. 11c,d) examining c-fos levels in the temporal association area/perirhinal cortex areas after ILSCm LP stimulation showed that these two regions were minimally activated.
This was confirmed by supplementary experiments.
Supplementary experiments are conducted using a drop tower.
Supplementary experiments indicated that the measured bandwidth dependencies were not contaminated by the extraneous sounds produced by the scanner.
However, the influence of the non-mixed part of the SDR is not quite well understood if only taking account of the frequency distribution analysis, and supplementary experiments are required to elucidate the underlying mechanism.
