The phrase "major technical advances" is correct and usable in written English.
It can be used when referring to significant technological changes or developments over time. For example, "The last few decades have seen major technical advances in the field of artificial intelligence."
Few companies were advertising major technical advances.
The pioneering era of fast-paced major technical advances is behind us.
Major technical advances may, of course, require many years between the original discovery or conception and the time when a practical design becomes feasible.
Major technical advances followed the advent of percutaneous kidney biopsy in 1951, including applications of thin serial sections, special stains, immunofluorescence, and electron microscopy.
One of art's major technical advances tin recent years is the Iris print, the result of a digital technique that uses a special ink jet or Iris printer capable of producing millions of colors.
Several major technical advances have been made in this field during the last decade, and clinical application is at the stage of first clinical trials.
The new AbioCor replacement heart, as it is called, appears to mark a major technical advance over the clumsy artificial hearts whose disastrous effects in the early 1980's threw a cloud over the field and greatly slowed further progress.
"It's a major technical advance that combines efficient genome editing in cells with animal cloning in order to address the profound shortage of donor organs for transplantation," says Kevin Esvelt, a researcher at the Massachusetts Institute of Technology.
The major technical advance of being able to record and store a lifetime of language puts us one step closer to the answer.
Inclusion of an indirect calorimeter in modern ventilators would represent a major technical advance.
This is a major technical advance in comparison with existing prognostic multigene expression tests which are performed in central reference laboratories.
