Derection and power spectrum of an incident plane wave are estimated by evaluating amplitude and rate of phase change of the corresponding sinusoidal wave.

从相应正弦波求得的振幅和相位变化率可以检测平面波的入射方向和功率谱。

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After retrofit of no. 1 circulating-water pump pole-change in Jiujiang power plant, energy saving effect is obvious, it can reduce service power rate and increase total economy of units operation.

九江发电厂1号循泵变极改造后节能效果明显，对降低厂用电率、提高机组运行整体经济性的效果显著。

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As a result of the power of compound interest, the choice of discount rate used to estimate the potential economic costs of climate change is more important for purposes of understanding the trade-offs associated with competing climate-change policy options than perhaps any other single issue in climate change economics.

FORBES: Why Most Forbes Readers Know More About Global Warming than Most Climate Scientists