This paper introduces the design thinking, structure, principle, testing precision and applying domain of permeability gradient meter.

介绍了岩心渗透率梯度仪的设计思路、结构原理、检测精度及应用领域。

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In addition, since the source may be near zero Kelvin while the meter is at 300k, there is a very large temperature gradient.

此外，由于源可能处在接近0 K的温度之下，而电压表则处在300k的温度之下，这就出现了很大的温度梯度。

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