The phrase "an about equal" is not correct in written English.
It seems to be a mix-up of terms and does not convey a clear meaning.
Example: "The two teams had an about equal chance of winning, but one performed better."
Alternatives: "approximately equal" or "roughly equal".
They met an about equal number of ethnic Tuareg rebels, who may have been aided by jihadists.On May 21st the soldiers lobbed shells over the heads of African and French troops stationed at an international base.
Other uitlanders produced a counter-petition in which an about equal number affirmed their satisfaction with Kruger's government.
But even as measurements like the generic ballot have improved for Republicans, and the once-unpopular tax bill has moved to an about equal approval rating, some members don't buy that Republicans will effectively limit their losses.
This analysis showed that most central cells had an about equal intensity distribution in both membranes, but a higher tonoplast fraction was typically observed in epidermal cells (Figure 5C,D).
However, by 15 months, female mice had an about equal frequency of liver lesions as male mice (P=0.226).
Most of the paralogous pairs (~80%) are made by enzymes performing exactly the same reaction and the remaining fraction is formed by an about equal number of paralogous enzymes with no functional overlap (~10%) and of paralogous enzymes with a partial functional overlap (~10%).
"This is not just a women's issue," Mr. Obama said during an exchange about equal pay for women in the workplace.
Net neutrality is an idea about equal access to Internet content.
Depending on the available technology and current regulations, about half of the oil there may be recoverable, an amount about equal to the entire world's proven oil reserves.
Since the establishment of the National Park Service by Woodrow Wilson, the amount of land set aside equals 84 million acres - an amount about equal to half the size of Texas.
Janusz and colleagues [ 15] showed that murine MMP-12 degrades cartilage proteoglycan with an efficiency about equal to human MMP-12 and matrilysin (MMP-7) and twice that of stromelysin-1 (MMP-3).
