"supplement the system" is correct and usable in written English.
You can use it when you talk about adding something to an existing system to make it more complete or efficient. For example, "We need to supplement the system with new software to increase its performance."
A course sequence in mechatronics is being developed to supplement the systems engineering curriculum and consists of the sequence Introduction to Engineering, C Programming, Elements of Mechanical Design, Circuits and Systems, Digital Systems, Control Theory, Instrumentation and Measurements, and Mechatronics.
Therefore, we supplemented the system with a prediction-based retrack function.
Hence, A. borkumensis can be encouraged to utilize n-alkanes present at the surface of the system quicker by supplementing the system with dissolved organic nitrogen.
In order to adapt the system to multiplexed applications, we supplemented the system with T7 RNA polymerase and rNTPs.
We supplemented the system with a SSI RH-300 water vapor analyzer set to measure water vapor density in µg ml−1.
Most also use a locally produced learning management system to supplement the commercial system in order to meet all of their needs.
In low DG penetration situation, the upper level power supply is considered as sufficient to the load, the DG act as a supplement to the system, the system is operated as a distribution system.
It was Cosimo, we learn, who constructed the Medici cosmos, who took the themes of the Italian Renaissance and wove them together, supplementing the systems of the great ancients — Euclid, Archimedes and Ptolemy — with other ideas: that knowledge was an aspect of power, that power was required for proper order and that social order itself can lead to an increase in knowledge.
