ring infiltrometer

例句：

1. 1.The ring infiltrometer was used to measure the soil's permeability.
   环渗仪被用来测量土壤的渗透性。
2. 2. The ring infiltrometer was used to test the soil's water-holding capacity.
   环渗仪被用来测试土壤的持水能力。
3. 3. The ring infiltrometer was used to study the effects of rainfall on the soil's structure.
   环渗仪被用来研究降雨对土壤结构的影响。