介绍了静态校准加速度计的方法：地球重力法、负载法和离心机法。

Describes the static calibration methods of accelerometer: gravitational attraction method, loading method and centrifuge method.

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本文介绍并分析了离心式水泵的负载特性和变流量调节方法，对比了其能耗大小。

This article describes and analyzes the load characteristics of centrifugal pumps and variable flow regulator method, compared the size of its energy consumption.

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更适用于拖动转矩递减的离心式水泵和风机负载。

Can adjust the speed steplessly with constant torque. such as fans, pumps and such instruments with decreasing load.

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