The phrase "alternating sections" is correct and usable in written English.
It can be used to describe parts of a structure, document, or design that switch back and forth between different elements or themes.
Example: "The report is organized into alternating sections of analysis and recommendations to provide a balanced view."
Alternatives: "interchanging segments" or "fluctuating parts".
"Bliss" is divided into two parts, told in alternating sections.
My Story (1980) is her autobiography with alternating sections by Alan Burgess.
Renga, or "linked verse," is a form in which two or more poets supplied alternating sections of a poem.
The Get Carter author's kinkiest, nastiest, most moving novel by miles: this is your genuine east-coast noir, told in alternating sections entitled "The Smoke" and "The Sea".
In "Two Sisters," twins (one living, the other never born) speak in alternating sections, each mourning the inaccessibility and invisibility of the other.
We cruised without upset through alternating sections of flat-water and Class II rapids more or less equivalent to foot-high ocean breakers.
This is even more apparent in "Spanish Wells," which alternates sections of Debussy's "Mer" with songs by Amy Winehouse.
In their book about the case, The Death of Innocence, that they wrote together in alternate sections, John insists beauty pageants were just "one of her many hobbies".
Michael Owen, the narrator of alternate sections of What a Carve Up! and the apparent author of those parts written in the third person, has been a fan of Agatha Christie and Sherlock Holmes stories in his youth.
The Tiwi people of Melville and Bathurst islands created tall poles in abstract forms by carving, removing, or leaving in their original dimensions alternate sections of a tree trunk.
We analyzed the total numbers of afferent terminals, synaptic thickenings, and synaptic bodies associated with each IHC in the C57BL/6J mouse cochlea, and confirmed the accuracy of the stereological approach in comparison to three-dimensional reconstructions of serial alternate sections.
