Power Factor Meter
功率因数测量仪
功率因子计
必v因子计
功率因数表
功率因数计
3-phase power factor correction
Active Power Factor Correction
active power factor correction APFC
Active power factor corrector
Active power factor corrector with high frequency switch
Adjustable Power Factor
adjustment of power factor angle φ
asynchronous motor with high power factor
automatic power factor regulator
功率因数自动调整器
功率因子自动调整器
自动功率因素调整器
compensation of power factor
constant power factor control
correction of power factor