The phrase "a vital segment of" is correct and usable in written English.
It can be used to emphasize the importance of a specific part or component within a larger context or system.
Example: "Education is a vital segment of personal development and growth."
Alternatives: "an essential part of" or "a crucial component of".
Certain algae, especially planktonic (i.e., floating or drifting) forms, constitute a vital segment of food chains.
The new process, together with Kate Gleason's effective promotion, put the Gleason firm solidly in the forefront of a vital segment of the machine-tool business.
Now, however, the Pataki administration has proposed a new tax break, intended not for the blue-chip companies that have dominated the New York City economy, but for a vital segment of the fast-growing Internet industry.
Jackson Browne's song was a breezy tune about feckless love back when hitchhiking was a way of life, gas was in the 30-cents-a-gallon range and Winslow's slice of Route 66 was still a vital segment of the way west.
He and other advertising executives are worried that such divisive rhetoric denigrates Latinos, and could prompt a retreat in marketing to a vital segment of the country.
Granted, Chocolate City is, as Tommie Henderson '95 put it, a "very vital part of the African-American population as well as a very vital segment of the whole MIT community" [ Entire Community Should Handle Racism," March 19]; but, it nonetheless surprises us that this group should be the one apparently handling the investigation into the matter.
Watkin was determined to build this section as a vital segment in his vision of a London Manchester railway, and proposed that if the MR would not build this section, the Manchester, Sheffield and Lincolnshire Railway would build the line themselves and lease it to the MR. The MR board refused to have anything to do with the scheme.
Michael Colglazier, who has been president of the Disneyland Resort in Anaheim for the last five years, has been promoted to oversee Walt Disney Co.'s parks in Asia, a strategically vital segment of the company.
The flapper-nozzle pilot stage, whose performance can be deteriorated by the generated flow cavitation phenomenon, is a vital segment in achieving precise control of electrohydraulic servo-valves.
It took a long time, but the settlement between the Federal Trade Commission and Intel, the microchip company, on Wednesday stands a reasonably good chance of curtailing the company's tactics to keep its dominance of the microprocessor market and of bolstering competition and innovation in this vital segment of the economy.
For all the attention to Mr. Edwards's Southern roots, Mr. Kerry's aides said that his strongest appeal was likely to be among rural and independent voters, two of the most vital segments of the electorate this year, because of his upbringing in a small North Carolina town and his political identity as a Southern Democrat.
