When it comes to describing the regular process or procedure that a system or machine goes through, there are several synonyms that can be used for the term "normal operating cycle". Some of these synonyms include the "standard operational procedure", the "usual functioning process", the "routine workflow", the "common operational cycle", and the "regular working pattern". Each of these synonyms conveys the same idea of a standard or typical way in which a system operates or functions. Whether it's a manufacturing plant, a software program, or a natural ecosystem, these synonyms can help to describe the everyday patterns and routines of any well-functioning system or operation.