The phrase "a completed section of" is correct and usable in written English.
It can be used when referring to a part of a larger document, project, or work that has been finished.
Example: "The report includes a completed section of the analysis, which highlights the key findings."
Alternatives: "a finished part of" or "a finalized segment of".
The Automobile Show was in full swing this week in a freshly completed section of the new $354 million convention center on the banks of the Allegheny River as steelworkers continued erecting the building's sweeping, cantilevered roof, which echoes the nearby suspension bridges known as the Three Sisters.
NY 430 was extended eastward to its current terminus in Jamestown in the late 1970s after NY 17 was realigned onto a newly completed section of the Southern Tier Expressway between Bemus Point and Jamestown.
There's also the suggestion that people enjoy playing unfinished titles over the course of several days more than playing a short demo of a completed section, as used to be the case.
They have become the only trekking outfit to offer a guided trip along the first completed section of the Great Himalayan Trail (GHT).
Highway 2S (S for Scenic), was the first completed section of new roadway.
On 23 September 2003 passenger services began running on the first completed section of High Speed 1.
In the nearby completed section of Hasansham camp, row upon neat row of tents stood dust-covered and empty, awaiting the expected influx of civilians.
A stopgap measure of an on-road route to link completed sections of the trail in Farmington to the north and Southington to the south is under consideration.
where t is a forecasting window (years) and λ is the eruption rate (number of eruptions per year) defined over a complete section of the eruptive catalog.
After thawing and hydration of the specimens by immersing them in a saline solution at 20 °C for 15 min, a complete section of proximal patellar ligament was performed.
