"constant progression" is a correct and usable phrase in written English.
You can use it to describe something that progresses steadily and without interruption. For example: "The student's constant progression in his classes showed his dedication to learning."
The model estimates, for constant progression and progression at the end, that 10%95%5% CI 7-137-13% chlamydinfectionsons progress to PID.
"There is constant progression and no looking back".
"Most importantly, I am looking for constant progression.
These were the ornaments: upon her hands a number of rings set with precious stones of various colours, about her head no small number of golden stars interspersed with stones of every kind, and about her neck numerous necklaces, some of them smaller, the others each a little larger in a constant progression.
Backed by a constant progression in his academic career he became the Rector, between 1992 and 2004, of the 'Carol Davila' University (the oldest, largest and most prestigious in Romania), considered an example of progress and innovation in the 150 years of history of the University.
LF: It's a constant progression, such is life.
But the result was not a single Chain encompassing all life, both terrestrial and aquatic: When I observe the productions of Nature, I do not see one single and simple progression, or chain of beings, but rather I find a great number of uniform, perpetual and constant progressions.
Over this stretch, NY 31 maintains a constant southeasterly progression as it passes though southeastern Rochester and the town of Brighton.
Nevertheless, the relative mortality between each of the scenarios remained constant across progression rates.
In particular, the RRV has been in constant northward progression in North America over the last four decades (Curtis 1999).
Complications are common but not a constant: disease progression is marked by severe colitis, strictures and perianal fistulas, typically requiring surgery [ 6, 7].
