Very important for the swelling behaviour Is the polar character of the water molecule. Experiments with nonpolar fluids like heptanor benzine showed no or only very small swelling.
同一岩样浸入极性和非极性的流体中，其膨胀性能是不同的，这与水分子的极化特性及其表面张力有关。
Thus, polar compounds cannot enter the brain but can enter the interstitial fluids of most other tissues.
这样，极性物质就不能进入脑组织，但可以进入其他多数组织间液。
A new four-parameter corresponding states method is presented to correlate the generalized volumetric behavior of polar and non-polar working fluids.
提出了一种用于预测制冷工质热物性的新的通用四参数对比态方法。
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