The phrase "a prototype series" is correct and usable in written English.
It can be used when referring to a collection or sequence of prototypes that are being developed or tested.
Example: "The engineers presented a prototype series of the new electric vehicle to the stakeholders for feedback."
Alternatives: "a series of prototypes" or "a prototype lineup".
Prototype 2. Activision, disappointed with reviews and slow sales, called for an end to the Prototype series, stating that the games had "failed to find a broad commercial audience".
Anyway, you've also got the Infamous and Prototype series, "superhero" versions of a great game.
I became a part of that story as I drove a prototype 5 series (fun even in manual mode) onto a public Las Vegas highway, pressed a button on a steering wheel and let the car's test Co-Pilot system take control so I could focus on other tasks.
A few other matchups of geographical rivals as well, perhaps, but Mets-Yankees was the prototype series.
When Brumos Racing entered the Grand Am Daytona Prototype series at its inception four years ago, Mr. Snodgrass expanded his crew beyond the usual mechanics and tire-changers; it has evolved into what may be the most comprehensive medical staff in the pits at any endurance race.
The same model was used for non-destructive fault diagnosis and troubleshooting of the prototype series.
The results showed that only compound 7f possessed potent activity against HIV-1 replication (EC50 = 2.45 μM) similar to the prototype series of sulfanyltriazoles.
For the Global Underground completist, there were also four editions of Seb Fontaine's Prototype series.
Both prototype series used the same turret design from Krupp; the main differences were in the hull, transmission, suspension and automotive features.
As a prototype of this series, in the 1H-NMR of compound (20), the eight methylene protons of morpholine appear as multiplet at a chemical shift range of 3.57 3.74 ppm, while the benzyl methylene group protons appear as multiplet at 4.45 4.50 ppm.
