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��һ��޸�ѹ��Ƶ��frequency conversion)��ˮ�豸��ˮ�ã�water pump��ˮ��һ��һ��(adjust)ˮ�䣨��ɲ��֣��ˮ�䡢��ˮ�䡢��ˮ�䣩��ɳ��(city)ˮԴ��ܣ�һ��ˮ��ˮ��һ��ˮ��ˮ��(Ӧ��ʳƷ��ʯ�͡��)��(import)��;ˮ��ˮ��һ��ˮԴ��ӣ��һ��ˮ��ˮ��ˮ�豸��˼��ʵ��޸�ѹ��ѹ�޴��˴�ͳ��ˮ��ˮ�أ�Ҳ��Ƶ�޸�ѹ��ˮ�豸��ͳ�Ĺ�ˮ��ʽ�벻��ˮ�أ��ˮ��е�ˮһ��ˮ�ܹ��ѹ��ˮ��ˮ�غ��㣬��ɴ��Դ�װ��˷ѡ��ɳ��ܵ�ѹ��Ϣ(information)��ƣ�control)��ܺ�ˮ��ˮ��ϵķ��(��ܣ��ֹ��ѹ��)��ڳ��ܹ�ˮѹ��ָ��ѹǿ��ﵽ�趨ѹ��ʱ��رճ��ܣ��ˮ��ˮ�ܵķ��ţ��ѹ��ȡˮ�䴢ˮ��ϵͳ��ˮ��ȷ��ˮѹ��һ��Χ֮�ڲ��(indoor)ϵͳ��Ϲ�ˮ��Ŀ��Ʒ�ʽ��Ͳ��޸�ѹ�ĸ��ˣ��޸�ѹ�ֽ��һ��޸�ѹ��ι�ˮ�豸��Ѳ��ܷ�ӳ��豸��ʹ��(use)��(g��ng n��ng)�ˣ��Բ��޸�ѹ��Ƶ��ˮ�豸��ƱȽϿ�ѧ(science)��
��ǣ��ѡ��豸ʱ��Ӧ��ע��ˮ�ã�water pump��ʵ�ʹ��Թ�ˮ(Water supply)��ȫ(security)�ͽ��(Energy saving)Ч��Ӱ��(influence)��ˮ�豸��ȡ��ˮ�أ��ܳ��ˮ��ѹ��ֱ�ӹ�ˮ��ӹ�ˮ��Դ�Ķ��˷ѺͶ��Ⱦ��Ƚ�ʡ�˻��Ͷ�ʲ��ʩ��ڡ��ѹ��ˮ�豸�ܹ��ֹ�ˮѹ��ĺ㶨��ʹ��ˮ��ˮ֮�䱣��ƽ�⣬��ˮ��ʱ��ˮҲ�࣬��ˮ��ʱ��ˮҲ�٣��Ӷ��˹�ˮ��ι�ˮ�豸��ָ��λ��˽��й��ˮ��Խ��ʩ��ˮ��桢��ѹ��ͨ��ܵ��ٹ��û��õ��ʽ��ˣ��ι�ˮ�Ǹ߲㹩ˮ��Ψһѡ��ʽ��ˮ�ôӵ��(adjust)ˮ��ˮʱ��ˮ�õ��̱��(have to)����ˮ��ѹ��ɳ��(city)��(Pipe Network)��ѹʱ��ڳ��й��ѹ��Ƶ��ʵ��Ҫ��ǰ��С��ǰ��й��ƣ�control)��ѹ��Ϊ0.2MPa,��ɳ��й��ѹҪ��ɵ��ˮ��ˮ��ͣ�reduce)20m��̣��ʱ��(Controller)��Զ�(automatic)��͹��Ƶ��(frequency)��Ƶ�õ�ת��Զ��͡��ݱ�Ƶ��ҵ�Ľ��(Introduce)��Ƶ��Variable-frequency Drive)��ˮ�ù��(g��ng zu��)ʱ��Ƶ�ʵ��ڻ�С��25Hzʱˮ�þͲ��ˮ�ˡ��֪��Ƶ�õ�ת��빩��Ƶ��ǳ��ȵģ��(normal)��е��Ƶ��Ӧ��ڹ�Ƶ��50%��Ҳ��˵��Ƶ�õ��ת�ٲ�Ӧ��ڹ�Ƶת�ٵ�50%��

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