The phrase "a main section with a" is correct and usable in written English.
It can be used when describing a part of a document, presentation, or any structured content that includes a primary segment followed by additional elements.
Example: "The report includes a main section with a detailed analysis of the data collected during the study."
Alternatives: "a primary section containing a" or "a central section featuring a".
The new place offers two distinct dining possibilities: a main section with a copper-topped bar, a pressed-tin ceiling and antique hanging lights; and a dazzling white room featuring a wall of windows and sheer billowing material covering the ceiling.
Its exterior is stucco over concrete block; the building has a main section with a round-arched asbestos-shingled roof, and is two stories high, five bays wide, and ten bays deep.
After polymerization, the specimens were sectioned parallel to the main section with a high-precision diamond disk at approximately 150 μm and ground down to approximately 30 μm with a specially designed grinding machine.
Typically this would comprise an intro, a main section (often incorporating a bass drop), a midsection, a second main section similar to the first (often with another drop), and an outro.
The slow buildup to the return of the movement's main section — with repeated pizzicato string figures and snarling staccato brasses — was like some demonic, forced military march.
The main section returns with a variant of the original accompanying rhythm.
Findings are described under three main sections with references to how they fit with the analytical framework (Table 1): Responses to a direct question about ethnicity and satisfaction with services.
Toward this goal, the work is thematically organized into three main sections with the primary thrust on time-varying networks: Part I studies social dynamics; Part II focuses on community identification; and Part III illustrates diffusion processes.
These applications are split into three main sections, with special focus on how these different domains can support drug discovery, and non-clinical and clinical development.
Generally, it will have one (or more) main sections with corresponding titles ( headings ).
