The phrase "altered in operation" is correct and usable in written English.
It can be used to describe something that has been changed or modified in its functioning or performance.
Example: "The machine was altered in operation to improve its efficiency and reduce energy consumption."
Alternatives: "modified in function" or "changed in performance".
By Jack Wynn The New Yorker, September 10 , 1927P. 27 The short-change racket, worked at every county fair, carnival lot and small town circus, and is being worked daily on Broadway, slightly altered in operation and carries carries a new racket title, that of "laying the note".
A number of detailed transient state tests were conducted in which the flows and levels were altered in line with the reservoir operation before and during the outbreak.
Republicans gained two seats on the panel, bring their numbers from 12 to 14. Several new GOP lawmakers were appointed to the spending panel that will have its operations somewhat altered in the wake of the earmark ban".
The expression of 840 transcripts was altered in L-MI rats 2 months after the operation.
The continued operation of the fleet was made more cost effective when maintaince and support regimes were altered in 2006 7.
Nothing's altered in that way".
Everything was altered in an instant".
The change in operation of existing thermal generators would also alter the thermal efficiency of generating plants, as highlighted in Fig. 7.
The company has raised prices and altered its operations in response to the higher costs.
Upstream processes may affect the wafer substrate in a manner that alters performance in downstream operations, and the context within which a process is run may fundamentally change the way the process behaves.
Significant physiological changes were observed in the recombinant B. licheniformis in response to altered bioreactor-operation conditions, i.e. initial glucose concentration.
