Velocity and salinity(or density) differences between the wake area and non-wake area of a surface ship may be measured with an electric conductivity probe.

在舰船尾流区与非尾流区之间存在显著的速度差和盐度（或密度）差，利用电导率探头可获得对应于这些差别的尾流电导率信号。

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Rainforests make up only a small part of the Earth's surface, about six percent, but there are more kinds of trees than any other area in the whole world.

热带雨林只占地表的一小部分，大约是6%，但它的树木种类比世界上任何其他地区都多。

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One consequence of dividing a substance into nanoparticles is that the surface area of the material greatly expands.

将物质制为纳米粒子的结果之一是材料的表面积极大地扩展了。

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With such a vehicle, astronauts could explore a much larger area of the moon's surface.

VOA: special.2009.07.29

This would depend on the total surface area of roofs in a city.

VOA: special.2010.03.02

It has a surface area of almost twenty thousand square kilometers.

VOA: special.2009.08.19

In addition to mastery of traditional calligraphy, the art of engraving requires a high degree of virtuosity, since the artist works on a tiny surface area where every curve, every thickness of line counts.

UNESCO: Culture

Washing generally involves high temperatures, fine sprays (and hence a large surface area) and a lot of sloshing around of water, all of which promote efficient chemical stripping.

ECONOMIST: Indoor pollution

Airships demonstrate a law of increasing returns: doubling the length increases the surface area (and hence weight) by a factor of four while the volume (and hence lifting capacity) goes up by a factor of eight.

ECONOMIST: Pushing the envelope