The phrase "a main body" is correct and usable in written English.
It can be used to refer to the central or most important part of a text, document, or structure.
Example: "In the report, the main body discusses the findings and implications of the research conducted."
Alternatives: "the core section" or "the primary part".
Rectangular, as mantles were, it has a main body of black embroidered with colorful stylized fish that perhaps represented local gods.
He held out the prospect of more reductions but committed only to a plan that would withdraw by next July the additional combat units he ordered there in January, leaving a main body of more than 130,000 troops intact.
The plan he outlined would still leave a main body of at least 130,000 American troops in Iraq next summer, and he said that it would be premature to discuss a timetable for further withdrawals beyond those he outlined.
Coring devices typically have three principal components: interchangeable core tubes, a main body of streamlined lead weights, and a tailfin assembly that directs the corer in a vertical line to the ocean bottom.
MoMo3 comprises a main body and two legs.
It has a main body and four extensions: temporal, buccal, pterygoid, and pterygopalatine [15].
A typical mechanism composed of a main-body with a yoke and two panels is used as a demonstration case to study the dynamic response of the deployable solar array system in the deployment process and post-latch phase.
The dynamics of the vibro-impact system which consists of a capsule main body interacting with a harmonically driven internal mass in various environments is studied in this paper.
He took a course in American oratory at Yale and remembers how a speech divides into an introduction, main body, peroration.
With its two bulbous pods attached to a cylindrical main body by V-shaped struts, ABE, short for Autonomous Benthic Explorer, resembled a pillowy Starship Enterprise and was a familiar sight on expeditions by Woods Hole scientists and others.
(a) The main body of the unmanned autonomous helicopter RMAX-G1.
