• You see her "catkin word" knot sentence: "Good wind frequency of leveraging, the Albatron send me!"

    柳絮地结句:“借力自己上青云!”

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  • Due to the uneven distributions of both the emission sources and the wind frequency, air quality from different wind sectors could be very variable.

    基于排放以及的不均一,不同扇区来的空气质量很大变化

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  • The researchers have devised a method that allows the generation of energy by converting low-frequency vibrations from body movement, heartbeat, blood flow, and the wind into electricity.

    这项研究成果可以人体移动心跳血流低频振动转化为电能。

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  • The wires measure 1/5, 000th to 1/25th the diameter of a human hair and are capable of harvesting energy from low-frequency vibrations such as the wind or the flow of currents.

    这些管线直径只有头发5000分之一25分之一,并且水流之类低频振动获取能量

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  • This paper has worked out the vibration equation of cable truss by treating it as a discrete system and solved the vibration frequency and the displacement responses under stochastic wind loading.

    本文采用离散理论求得桁架振动方程,进一步可求得在随机荷载作用下索桁架结构振动频率及其位移响应

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  • The analytical methods of resisting wind divides into Frequency - Region method and Time-Region method.

    分析方法一般可分为时域法。

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  • A variable speed constant frequency wind power generation system of doubly-fed induction generator based on converter excitation was described.

    建立基于变换器励磁的感应电机的变速风力发电功率控制系统的模型。

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  • The decoupled control of active power and reactive power is a key technology of variable speed constant frequency (VSCF) wind energy generation system.

    发电机有功无功功率控制变速(VSCF)风力发电系统关键技术

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  • In recent years, the variable speed constant frequency wind generator system is the most widely question for discussion at home and abroad, especially for doubly-fed induction.

    变速风力发电系统近年国内外研究广泛课题,其中最具代表性的是绕线式转子双异步发电系统。

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  • Two kinds of wind power generation systems are introduced as well as the frequency control, power control and rotational speed control of generator in parallel operation.

    介绍了风力发电系统种形式并网运行的频率控制功率控制、发电机转速控制。

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  • The stator flux-oriented vector controlling strategies of keeping stator frequency constant and capturing the maximum wind power are verified by experiment results.

    实验结果验证定子磁链定向矢量控制策略能保证定子输出频率恒定,又能好地跟踪风力机的大功率输出。

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  • By using the frequency and speed modulation technology, the electricity consumed will vary with the amount of the wind, thus a remarkable energy-saving result is achieved.

    变频调速技术通过改变电动机工作电源频率调节电机转速,消耗电能风量大小而变,具有显著节能效果。

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  • When intensity of the atmospheric turbulence becomes stronger, or the cut off spatial frequency of the adaptive optics system becomes higher, the influence of transverse wind becomes stronger.

    大气湍流强度越大适应光学系统截止频率高,横向影响越大

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  • This paper introduces the control method for the Wind Turbine Units of constant speed constant frequency and variable speed constant frequency.

    文章介绍了变速恒频并网型风力发电机组控制方法

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  • The light self weight, large flexibility, small damp and low natural vibration frequency make it very sensitive to wind load.

    跨空间结构自重轻、柔性大、阻尼、自频率,对风荷载比较敏感,风荷载已经成为大跨空间结构设计的重要荷载。

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  • Finally, natural wind speed frequency distribution and the extreme wind speed in each section have been got by statistically processing of the routine calculation results.

    最后,将编程计算结果进行统计处理得到区段的自然风风速频率分布以及风速极值

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  • But Steady low fan speed change, so that airflow and vibration according to a fixed frequency, so we might as natural wind moderate.

    稳定风扇速度变化使气流振动固定频率因此我们可能自然风温和

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  • The movement of vessels on the sea usually divide for low frequency movement that composes of wind, flow, two steps wave, and high-frequency movement that composes of a steps wave.

    船舶海面综合运动一般分为波浪力、推力器造成低频运动阶波浪力造成的高频运动。

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  • To conveniently and accurately evaluate the wind-induced accumulated fatigue damage of high-rise structures in frequency domain, an improved equivalent narrow band method was proposed.

    为了方便准确地估算高耸结构疲劳累积损伤,提出了一种改进等效窄带算法

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  • Standardized the wind speed by Rayleigh frequency distribution, a concept named equivalent wind speed was presented;

    利用风速频率分布平均风速进行均一化,提出相当风速的概念

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  • The low-frequency instability in variable speed constant frequency doubly fed induction generator(DFIG) widely used in wind power generation is investigated.

    研究了广泛应用于风力发电变速双馈感应电机系统中的低频不稳定现象

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  • In China, the high rise structures load code is used for the large span spatial structures, only the first frequency is taken account for the wind vibration analysis, which is not reasonable.

    我国现在仍是采用高耸或高层结构荷载规范结构的第一阶频率计算振系数,按此方法进行空间网格结构的风振分析是很不合理的。

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  • The research in this thesis is focused on the low harmonic variable-frequency power for the system meeting the needs of wind tunnel propeller model testing requirements.

    旨在研究满足螺旋桨飞机模型风洞试验要求功率密度电驱动系统供电谐波变频电源。

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  • Results also show that decrease of pressure gradient in winter and spring influences dust weather frequency by affecting wind speed indirectly.

    冬春季节气压梯度减小风速减小、进而导致沙尘日数减小的关键间接因素

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  • The outer frequency spectra of wind waves are estimated with the time series data of wave elevation measured in the laboratory wind wave flume.

    利用实验室风浪槽内测波面序列资料估计风浪频谱

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  • MW variable speed constant frequency wind turbine from shenyang university of technology is a variable pitch wind turbine, it can change pitch to adjust power above rated wind speed.

    沈阳工业大学研制MW级变速风电机组属于距型机组,额定风速以上进行桨距控制。

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  • Variable-speed variable-frequency(VSVF), a new typed operational mode for the induction generator based wind power generation system is proposed based on the fractional frequency power transmission.

    在分析异步风力发电系统模型基础结合输电技术,提出了一种新型的异步风力发电系统运行方式——变速变频VSVF)方式。

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  • Variable-speed variable-frequency(VSVF), a new typed operational mode for the induction generator based wind power generation system is proposed based on the fractional frequency power transmission.

    在分析异步风力发电系统模型基础结合输电技术,提出了一种新型的异步风力发电系统运行方式——变速变频VSVF)方式。

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