Surface area concentration Csa is a new parameter for indicating the characteristics of debris flow.

表面积浓度c是一种新的表征泥石流体特性的参数。

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This can be explained that for lower water flow rates, the decrease of the interfacial area concentration was caused by the sharp decrease of the oil phase fraction with increasing water flow rates.

研究发现在一定油相折算速度条件下，随水相折算速度的增大，局部相界面浓度有先递减，而后逐渐增大的变化趋势。

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In practice in Tokyo, because of the relative concentration of schools, there is some competition to get into the "better" school in a particular area.

在东京的惯例中，由于学校相对集中，在某个特定地区进入“更好”的学校存在一些竞争。

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New handsets are another area of concentration.

FORBES: Motorola Reorganizes Unit Before Earnings

Meanwhile, in Australia, another area of fund concentration, stocks are mired in a 14-month-long slump as Chinese demand decelerates.

FORBES: Investing

We have 150-160 people working in that area, which is probably the largest private concentration in that area outside IBM and Google.

FORBES: Human with Machine Trumps Human vs Machine