Formation water with low salinity.

低矿化度地层水。

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The formation water salinity has a large effect on the absolute resistivity values.

地层水矿化度对岩石电阻率绝对值的影响很大。

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High formation water salinity reduces resistivity contrast between oil layer and water layer.

高矿化度的地层水，降低了油层与水层的电阻率对比度。

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But this is a compound, right, it has some non-zero heat of formation from the elements. So is water, right?

但这是种化合物，对吧？,它具有非零的生成热,水也是一样，对吧？

麻省理工公开课 - 热力学与动力学课程节选

So I need to find out the heats of formation of the iron oxide and the water.

所以我需要找出氧化铁和,水的生成热，如果我这么做了。

麻省理工公开课 - 热力学与动力学课程节选

And if I do that then I can find out the change in enthalpy of this reaction. It's just going to be the heat of formation of these three moles of water, minus the heat of formation of the iron oxide. OK.

我就能得到这个,反应的焓的变化,它就是三摩尔水,的生成热，减去氧化铁的,生成热，好。

麻省理工公开课 - 热力学与动力学课程节选

One way to increase the probability of rain is to seed the formation not of water droplets, but of ice crystals, an important step in precipitation.

ECONOMIST: Aerobiology

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