The phrase "a main form" is correct and usable in written English.
It can be used when referring to a primary or principal version of something, such as a document, structure, or concept.
Example: "In our study, we identified a main form of communication that was most effective among participants."
Alternatives: "a primary form" or "a principal form".
Players also get to grow vegetables and cultivate food stocks (cows being a main form of sustenance it appears).
One survivor said that the explosion completely destroyed the bus, a main form of intercity transportation for Afghans.
It must hammer technology companies for loose accounting standards, which include concealing the true cost of stock options, a main form of compensation for executives and staff.
Fatigue crack is a main form of structural damage in flexible pavements.
These conditions often occur in relatively remote areas where herding is a main form of subsistence; the "portability" of herd animals makes them prone to theft.
As a main form of media in the social network and the main microblog abroad, Twitter attracts people more and more.
In the meanwhile, the monoclinic sodium hexatitanate as a main phase is formed in nanorods, coexisted with sodium trititanate as a residual phase.
The nonprofit group Utility Consumers Action Networkk, suggests on its Web site UCAN.org, that if a cellphone is your main form of communication, you consider investing in a backup battery pack.
As uric acid is a weak acid, its main form in plasma is MSU, which has a maximum solubility of about 420 μmol/L (7 mg/dL).
Though I am a generally happy person who finds humor in even the most mundane occurrences, as a creative personality whose main form of expression and contribution is through my writing, my emotions lie close to the surface.
Once inside a network, Code Red II then set about creating a secret backdoor to allow subsequent attacks easy re-entry to execute malicious commands from afar.All told, half a dozen main forms of attack are used on networks today.
