The phrase "principally new" is correct and can be used in written English.
It means that something is mostly or mainly new and has some elements that are different or innovative. Example: The company's latest product is principally new, featuring advanced technology and improved design.
Selected international artists are invited to showcase their work, principally new commissions as well as several key works previously unseen in the UK.
A principally new approach to the design of identification algorithms is suggested.
Our main technical tool is a principally new property of compact narrow operators which works for a domain space without an absolutely continuous norm.
Principally, new information on the details of the funeral rites of the Middle Sarmatian tribes in the Lower Volga region was obtained.
At present, the elaboration of materials with principally new characteristics is related to obtaining nanosize systems, in particular, nanosize material the amphoteric compound of TiO2, the world market of which has been recently estimated as approximately five million tons annually, a large sector being taken by food, medical, and pharmacological industries [1 3].
In the case under consideration, the main advantages proper to bulk transition-metal manganite ceramics (wide range of electrical resistance with high temperature sensitivity) and humidity-sensitive MgAl2O4 ceramics will be transformed into thick-film multilayers, resulting in a principally new and more stretched functionality.
His lawyers have said that leaks about the case to some news organizations, principally The New York Times, could be viewed as a further effort to politicize the investigation.
The main sources of population growth have been natural increase and in-migration from other parts of Australia, principally New South Wales and Victoria.
The dispute threatens to affect other cities where Time Warner has cable systems, principally New York, where the company has 1.2 million customers.
In fact, all such economic transformations were based principally on new ideas and exciting innovation, as Joseph Schumpeter, the economic exponent of creative destruction, so clearly pointed out.
About 80 km to the west, at Fermilab, the highest-powered beam of neutrinos in the world is being produced, and fired through hundreds of kilometres of solid rock to impatiently-waiting detectors, principally the new NOνA far detector.
