adjustable; modulatable
Describes something whose settings, level, or parameters can be changed. Common in technical and everyday contexts.
The height of this chair is adjustable.
The volume can be changed with an adjustable knob.
Similar meaning, but 調節可能 often implies finer or more precise regulation, while 調整可能 is broader for general adjustment.
Compound of 調整 (adjustment) + 可能 (possible). The derivation is transparent from its components.