directional permeability

例句：

1. 1. Thedirectional permeability of the soilis crucial for plant growth.
   土壤的定向渗透性对植物生长至关重要。
2. 2. The researcher found that the directional permeability of the soil affected the distribution ofwater and nutrients.
   研究者发现，土壤的定向渗透性影响了水分和养分的分布。
3. 3.The directional permeability ofthe soil plays a significant role in determiningthe quality of the soil.
   土壤的定向渗透性在决定土壤质量方面起着重要作用。