Double filter has a compact construction and it is very easy to install.
其结构紧凑，易于安装，不用停车就可更换空气过滤芯。
Double current hysteresis optimal state control method in single active filter is proposed.
提出了单相有源滤波器双滞环电流比较状态优化控制方法。
Double current hysteresis optimal state control method in single active filter is proposed.
提出了单相有源滤波器双滞环电流比较状态优化控制方法。
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