functional residual capacity

例句：

1. 1.The soil's functional residual capacity iscrucial for plant growth.
   土壤的功能性残余容量对植物生长至关重要。
2. 2. The engineercalculated the functional residual capacityof the system.
   工程师计算了系统的功能性残余容量。
3. 3. The studyfound that the functional residualcapacity of the soil was reducedby 5% due to therain.
   研究发现，由于雨水的影响，土壤的功能性残余容量减少了5%。