本文设计了一种恒功率脉冲调宽式力平衡式传感器，并从理论上对它作了分析。

In this paper, a kind of sensor with constant power pulse width modulation and force balance is described and analysed theoretically.

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本文着重介绍了20千瓦变速恒频波力发电系统的控制功能和保护体系。

This paper mainly discusses the control and protection system for the 20kw VSCF (Variable Speed Constant Frequency) Wave Power Electric Station.

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合理成桥索力计算实质是斜拉桥恒载受力状态的优化计算。

Calculation essence of reasonable cable force is equivalent to optimization calculation on force status of cable-stayed Bridges under dead weight.

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What we needed was some mechanism of exerting some fixed force.

我们需要的是一些能够产生恒力的装置

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