"enhance margin" is a correct and usable expression in written English.
You can use it to refer to increasing the profit margin of a company, or in any context when talking about increasing or improving a margin. For example, "The company implemented a series of cost-cutting measures to enhance margin."
However we will concentrate on those opportunities within our control to improve performance further and enhance margins.
The device is expected to enhance margins at the company, which in past years has steadily relinquished market share to rivals.
In its effort to enhance margins, I am also anticipating that Amazon will acquire another Seattle company, BlueNile, a diamond jewelry seller.
Other parameters also analyzed were enhancing tumor crossing the midline, non-enhancing tumor crossing the midline, tumor extension into cortex, definition of the enhancing margin, definition of the non-enhancing tumor margin, proportion of edema, presence and absence of cysts and hemorrhage.
Proportional hazards regression was similarly performed on other imaging parameters as follows: enhancing tumor crossing the midline, non-enhancing tumor crossing the midline, tumor extension into cortex, definition of the enhancing margin, definition of the non-enhancing tumor margin, proportion of edema, presence and absence of cysts and hemorrhage.
A higher share of temporary workers, whose contractual relationship may be costlessly terminated and whose wages are therefore more frequently negotiated, served instead as a significant wage flexibility enhancing margin.
The collections are homogenous and of fluid density/intensity, and with time can develop smoothly enhancing margins.
After contrast, there were areas which did not show evidence of contrast enhancement with an irregular enhancing margin.
