hole concentration

例句：

1. 1. The hole concentration in the soil isa critical factor in determining the growth ofplants.
   土壤中的孔浓度是决定植物生长的关键因素。
2. 2. The researcher found that thehole concentration in the soil had a significantimpact on the growth of crops.
   研究人员发现，土壤中的孔浓度对农作物的生长有显著影响。
3. 3. To improve the efficiency of irrigation, it is important to understandthe hole concentration in the soil.
   为了提高灌溉效率，了解土壤中的孔浓度是很重要的。