The phrase "a demonstration run" is correct and usable in written English.
It can be used when referring to a trial or test of a process, system, or product to showcase its functionality or performance.
Example: "Before the official launch, we will conduct a demonstration run to ensure everything is working as intended."
Alternatives: "a trial run" or "a test run".
Red Bull put on a demonstration run in the Suzuka sunshine, with Sebastian Vettel leading home team-mate Mark Webber.
Adrian Sutil, a German driver at the Force India team, crashed on it this week in a demonstration run of a supercar.
Television cameras recorded the trucks waiting to roll from Westchester County's fire training center, and a demonstration run of a pesticide truck had been held in time for the late news.
A few weeks later, the German media reported that the partnership had fallen through, but Sauber denied the report, and on Wednesday it announced that it was planning to use the teenage Russian driver, Sergey Sirotkin, who had visited Sauber's factory in Hinwil, Switzerland, this week and had had a seat fitting to prepare for a demonstration run of the racing car in Sochi on Sept. 27.
The catalyst was loaded on an actual HDS unit as a demonstration run.
During a demonstration run of a Tesla Roadster in Southern France, the driver (who was demoing it for the passenger) attempted to take a wet corner a bit too fast and ended up going off the road, smashing the front left and rear right quarters of the car.
After first describing the attack as a spontaneous demonstration run amok, administration officials now describe it as a terrorist act with possible involvement by Al Qaeda.
A second demonstration ran between 15 December 2009 and February 2010 at the Waterways Visitor Centre in Dublin, and was streamed via Steorn's website.
The initial effort is a demonstration project, running Second Life technology on I.B.M. servers.
As a demonstration, Foursquare ran a case study analyzing T.J. Maxx's recent retail success.
Moses imagines having a demonstration plant running by 2020 and commercial technology by 2030.
