The key distinguishing feature is the input of energy in the form of chemical, electrical, or radiation (or combinations of these) to a gas or liquid containing the waste components to be degraded.
(The key distinguishing feature; is; the input of energy in the form of chemical, electrical, or radiation (or combinations of these) to a gas or liquid) (a gas or liquid; containing; the waste components) (the waste components; to be; degraded)
The key distinguishing feature a gas or liquid the waste components
is containing to be
the input of energy in the form of chemical, electrical, or radiation (or combinations of these) to a gas or liquid
the waste components
degraded