The phrase "a clear margin and" is correct and usable in written English.
It can be used when describing a specific requirement or characteristic, often in contexts related to design, layout, or measurement.
Example: "For the document to be considered professional, it must have a clear margin and sufficient spacing between paragraphs."
Alternatives: "a distinct margin and" or "an obvious margin and".
Most likely scenario: He wins Missouri by a clear margin and Minnesota narrowly and loses Colorado by a clear margin.
Most likely scenario: He wins Colorado by a clear margin and loses Missouri by about 10 points; Minnesota is very close but he loses there once all votes are counted.
Cells were regarded as viable if plasma membranes showed a clear margin and a homogenous content.
Three of the patients were treated using endoscopic resection with a clear margin and there were no recurrences.
Based on the statistical analyses, the key points for differentiating BCH and SCC are shown in Fig. 2. Most of the BCH were small but were relatively easily recognizable, probably because they had a clear margin and a dense and regular distribution of dilated IPCL; however, we could not evaluate the IPCL density.
All signs shared characteristics of immune infiltrates: a hazy fluorescein stain with intact epithelium, a clear margin between infiltrate and limbus, and subtle corneal neovascularization.
The margin status was determined as follows: a positive margin was defined if tumor cells were present at the surgical margin, a close margin was defined if tumor cells were present < 1 cm from the closest surgical margin, and a clear margin was defined if tumor cells were present >1 cm from the closest surgical margin.
However, Mr. Romney is now in a position where he is winning his average states by a fairly clear margin, and should have some wiggle room in the case where one or two things run against him.
By a clear margin, the Lebed voters — and the Yavlinsky voters as well — would go for Yeltsin.
If there are five polls that show Candidate X ahead by a clear margin in a state, and a sixth comes out showing Candidate Y in front instead, you're really misleading yourself and misinforming your readers if you write a 800-word blog post touting the predictive powers of the new poll and ignoring what the consensus says.
A highly centralized network indicates a clear margin between the center and the border of the network (De Nooy et al. 2011).
