We know the pressure is equal to force per area.

我们知道压强等于力除以面积。

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There were significant differences in both area and per area between two groups (P<0.05).

两组的牙本质小管面积和相对面积有显著性差异（P<0.05）。

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The filter pack provides more filtration media per area, leading to more efficient filtration.

该过滤包在单位面积上可提供更多的过滤介质，并因此产生更高效的过滤。

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We know the pressure is equal to force per area.

我们知道压强等于力除以面积。

麻省理工公开课 - 热力学与动力学课程节选

The piston has a cross-sectional area, a, and the force pressure is force per volume area.

我们以活塞系统为例，来说明膨胀功。

麻省理工公开课 - 热力学与动力学课程节选

So in a town that's the size of new Haven with a population of let's say 100,000 people in just the immediate New Haven area, there might be 20 of these instances of very severe form of polio per year, 20 crippled children would result.

在一个像纽黑文这么大的城市里,大约有十万人口,生活在纽黑文地区的人当中,每年可能就会有二十人,感染到这种急性传染病,可能会导致二十个孩子残疾

耶鲁公开课 - 生物医学工程探索课程节选

That means the cost of energy from its panels per area compares favorably to competitors, according to the company.

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My number differs from others, but I believe we can successfully support four nationwide players and another two to three regional networks per area for a total of seven, but it appears as though we will see thirteen or fourteen in the market within the next five to seven years.

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But they also have the highest sales per unit area of any U.S. retailer, double that of Tiffany.

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