An Improved Prediction Method of Soil-Water Characteristic Curve by Geometrical Derivation and Empirical Equation

Figure 7

The sketch of the ring-knife layout and the photos of experimental process. (a) The sketch of ring-knife layout. (b) The Whatman No. 42 filter. (c) The wrapped ring-knife samples under different water content. (d) The precision balance measuring the filter paper.

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