n.張力計(jì)
Soil volumetric water content was measured by employing the metallic tube of the tensiometer as an antenna, whose radiating impedance varied as soil water content. 將張力計(jì)中的一段金屬保護(hù)套管作為天線，利用其輻射阻抗隨著土壤含水率變化的規(guī)律來(lái)測(cè)量土壤容積含水率。
