power-weight ratio

Simulation results show that the fuzzy Control System had tracked of the best tip speed ratio when the wind speed is low, and get a stable output power when the wind speed is high.

仿真结果证明，模糊控制系统在低风速时很好的跟踪了最佳叶尖速比，在高风速时得到了稳定的输出功率。

Moreover, it can transmit data at a high speed in the frequency selective fading channel. However, one problem of OFDM lies in the big Peak-to-Average Power Ratio ( PAPR), which leads to intermodulation distortion of OFDM signals and degradation of systematic functions.

然而，OFDM系统中最主要的问题之一在于OFDM信号的峰值平均功率比（PAPR）很大，容易导致OFDM信号的交调失真和系统性能的下降，这就限制了OFDM技术的广泛应用。

The main concern of the study has been the assessment of the spacial distribution of the tritium breeding ratio, the plutonium breeding ratio, and the power density in multi-dimensional configuration and the comparison between One-, two-, three-dimensional global calculation.

重点分析了多维几何中造氚率、造钚率及功率密度的空间分布，比较了一维、二维和三维积分量的计算结果。

Based on the model, the paper studies how to design wind turbine controller, enables the system operating in the vicinity of the maximum power point, when the wind speed below the rated wind speed. That is the tip speed ratio lies in the optimal value.

在建立的模型基础上，研究了当风速在额定风速以下时，如何设计控制器使得风力机运行在最大功率点附近，也就是说将叶尖速比控制在最佳值。

The power factor ( pf ) is the ratio of average power to apparent power.

功率因数 是有功功率与视在功率之比.

The optimal relations between power and isentropic temperature ratio exponent, and between efficiency and isentropic temperature ratio expo-nent are derived, by which the optimal relation curve between power and efficiency can be obtained.

导出最佳效率时的功率与等熵温比指数、效率与等熵温比指数的关系式，以及最佳面积比，进而得到最佳效率与功率关系。

The relationship between the generator output power and thermoelectric leg aspect ratio is derived. The matching relationship between the load resistance and aspect ratio, and which between the external thermal resistance and aspect ratio are obtained respectively.

导出了发电器输出功率与电偶臂面长比的关系式，获得了负载电阻及外部热阻两者分别与面长比的匹配关系。

And this paper analysis and research the whole system and establish mathematical model, result in which the changing power-load adjusting is the control way of the best Tip Speed Ratio.

本文分析研究并建立系统数学模型，根据系统模型确定最佳叶尖速比的控制采用可变功率负载调节方法。

With the minimum frictional power loss and the maximum "the minimum oil film thickness" as the optimum objectives, the marine stern tube bearing is optimized by adjusting the length to diameter ratio, the clearance ratio and the altitude angle ratio.

并分别以功耗最小、最小油膜厚度最大为优化目标，通过改变长径比、间隙比、偏角比对尾管轴承进行了优化设计。

High solid exterior wall latex coatings are prepared of acrylate emulsion, rutile titanium pigment and micro ground chalk, resulting in lower condensing ratio after dry and higher hiding power.

采用丙烯酸酯乳液做分散介质与金红石型钛白粉和超细重钙粉等配制的高固含量外墙乳胶漆，降低了涂料干燥后的收缩率，提高了涂料的遮盖力等。