The constant pressure control system of finished water based on frequency adjusting is widely used in water works.

现阶段，基于变频调速的出厂水恒压控制系统，以其结构简单、容易实现等优点被国内水厂广泛采用。

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The configuration and variable frequency adjusting speed of water circulation pump in city heat-supply system are introduced, and the effects of energy saving are analyzed.

对城市供热系统中循环水泵的配置及变频调速进行了介绍，分析了其节能效果。

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And in healthcare, hospitals are adjusting emergency room staffing levels based on the frequency and proximity of key words in search engines (e.g. flu symptoms).

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