"internal features" is a correct and usable phrase in written English.
You can use it when referring to the characteristics of something that are not visible from the outside. For example, "The internal features of this new phone are impressive."
Internal features include thick stone walls, colourful ceramics and paintwork.
Different choreography might well bring out the music's internal features better.
Whereas various skeletal and internal features are diagnostic of birds, feathers are unique to and present on all birds.
It is the company's first chip to be made using Intel's new so-called 90-nanometer process, meaning the chips have smaller internal features.
With familiar faces it is the internal features of the face regions that include the eyes, nose, eyebrows and mouth that matter most.
Bound in mucus, the food is transported to the mouth via the labial palps, where further selection occurs (see below Internal features).
In principle, councils can take more care with landscaping and the spaces between buildings, as volume housebuilders have to strive more to compete on internal features, such as bathrooms and kitchens.
An internal mucous sheet, secreted by the endostyle, allows ascidians and thaliaceans to utilize a variety of organisms, especially small plants (phytoplankton) as their food source (see below Internal features: Digestion, nutrition, and excretion).
Yet Mr. Reeder's little period scene of family might-have-beens, however enigmatic, is vividly, stylishly composed, with the most keenly detailed and characterized dances in this Ballet Next season, and are sensitively set to internal features of the score.
Some of the more important tombs (Rekhmire, Ramose) have open courts before their unelaborate facades and some striking internal features, but most are small in comparison with those of earlier times.
For now, M Suggestions are focused on Messenger's internal features.
