power factor of the fundamental

例句：

1. 1.The power factor of the new generator is higher than that of the old one.
   新发电机的功率因数高于旧发电机。
2. 2.The power factor of the power grid is critical for maintaining stable electricity supply.
   电网的功率因数对维持稳定的电力供应至关重要。
3. 3. The power factor of renewable energy sources is an important factor in reducing carbon emissions.
   可再生能源源的功率因数是减少碳排放的重要因素。