The rods are used in steel water heater tanks - an aluminum tank has an inner layerof anode metal to accomplish the sa me thing. Anode rods should not be installed in an aluminum tank!
The analytic computational formula for grounding resistance of grounding rods in three-layer soil is derived based on the concept of equivalent soil resistivity.
基于等值土壤电阻率的概念,导出了三层土壤中垂直棒接地电阻解析计算公式。
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The enamel layerof a tooth is made up of hydroxyapatite crystals, which form microscopic "rods".