They thought that if the Earth itself was moving, there would have to be a constant wind blowing, sweeping them off their feet, and of course there wasn't.
他们认为，如果地球在运动的话，那么就会有风不断吹来，把他们刮倒——当然了，这种风并不存在。
In addition, a new method to translate from variable wind to constant wind is also presented.
此外，本文还提出一种新的弹道风生成方法。
In the case of constant wind, the simulated results can accurately reproduce the spectrum and wave growth relation on which the proposed model is based.
在常风速情形中，模拟结果能精确地化为建立模拟所根据的谱和风浪成长关系。
Fred Ferguson, a Canadian engineer specialising in airships, has designed a wind turbine that will use the constant winds that exist at 1, 000 feet to produce renewable energy.
加拿大工程师弗瑞德·费格斯(FredFerguson)是一位飞船专家，他设计了一个风能涡轮机，将利用1 000英尺高空持续不断的气流来生成可再生能源。
This paper analyses the trajectory of GPS automatics homing system in constant wind fields , and discusses the condition under which the gliding parachute system could reach preassigned location.
研究了全球卫星定位系统（ GPS）自动归航系统在恒定风场中归航轨迹的计算，探讨了系统能够达到预定目标点的条件，给出系统在几种变化风场中的轨迹图。
AbuBakr Bahaj, in charge of the Southampton research, said: The prospects for energy from tidal currents are far better than from wind because the flows of water are predictable and constant.
负责南安普顿研究的AbuBakr Bahaj说：潮汐流的能源前景比风能要好得多，因为水流是可预测和恒定的。
The batteries will enable a constant electrical output from sources such as wind or solar, which stop generating when the weather changes or night falls.
电池可以利用诸如风力或太阳能之类的来源提供源源不断的电能，即使在天气改变或夜晚奖励的时候不能再生成电能。
When he plugged that wind-force equation into his model and assumed that the probability of a branch breaking due to wind stress is constant, he came up with Leonardo's rule.
他将风力公式应用到他的模型中，并假定树枝受到风力作用而断裂的概率是恒定不变的，据此他推导出了达·芬奇公式。
Yet since wind and solar power are intermittent and other technologies are still experimental, a constant source of low-carbon electricity will also be needed.
然而，由于风能和太阳能具有间歇性的特点，并且当前其他技术仍处于试验阶段，所以稳定持续的低碳电力来源急缺。
More severe cases may be treated with a CPAP machine, so named because they maintain constant positive air pressure to the wind pipe to help users breathe easy at night.
严重一点的患者可能就得用CPAP机来治疗了，人们给它取这个名字是因为它能够给气管提供稳定的空气压力，借以帮助患者在夜间呼吸。
The clients' small lot backs up to a preserve, where the forms of windswept trees and dunes record the intensity and direction of the constant coastal wind.
业主在一定程度上支持维持地块的现状，从树和沙丘形状就能看出海风的强度和方向。
A variable speed constant frequency wind power generation system of doubly-fed induction generator based on converter excitation was described.
建立了基于变换器励磁的双馈感应电机的变速恒频风力发电功率控制系统的模型。
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的变速恒频双馈感应电机系统中的低频不稳定现象。
The decoupled control of active power and reactive power is a key technology of variable speed constant frequency (VSCF) wind energy generation system.
双馈发电机的有功和无功功率的解耦控制是变速恒频（VSCF）风力发电系统的关键技术。
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.
变速恒频风力发电系统是近年来国内外研究最广泛的课题，其中最具代表性的是绕线式转子双馈异步发电系统。
The stator flux-oriented vector controlling strategies of keeping stator frequency constant and capturing the maximum wind power are verified by experiment results.
实验结果验证了定子磁链定向的矢量控制策略既能保证定子输出频率恒定，又能较好地跟踪风力机的最大功率输出。
The angular facade functions as an effective wind breaker, mitigating the constant strong wind blowing from the sea as well as affording a certain amount of privacy to each apartment.
角形外观可以有效防风，减弱海上吹来的持续强风的作用，同时给各个公寓提供一定程度的隐私。
This paper introduces the control method for the Wind Turbine Units of constant speed constant frequency and variable speed constant frequency.
文章介绍了恒速恒频及变速恒频并网型风力发电机组的控制方法。
In order to meet the constant power control requirements of wind turbines, the wind turbine model was linearized at the operation points, thus variable pitch PID control of wind turbines is achieved.
为了满足风力发电机的恒功率控制要求，对其模型在运行工作点处进行了线性化处理，从而实现了风力发电机变桨距的PID控制。
Twin stator brushless doubly fed machine generation system which has no electrical brush and can running in variable speed and constant frequency condition is very suitable for wind power generation.
双定子无刷双馈发电机具有无刷化和可进行变速恒频发电的特点，非常适合于风力发电系统，对其发电系统的研究，将使这种新型电机能够尽快地应用于实际之中。
The wind speed and its gradient varied with a fan outlet area change at a constant flux.
在相同流量下，改变风机出风口的大小，可以得到不同的出口风速和梯度。
The design and manufacture for MW-class AC-excited doubly-fed generator is very important in the variable speed constant frequency doubly-fed wind power system.
在变速恒频双馈风电机组中，交流励磁双馈风力发电机的设计和制造技术是十分关键的。
Finally this article analyzed the mathematical model of wind turbine, compared to the current different types of variable speed constant frequency wind power systems.
最后分析了风力机的数学模型，对比了目前采用的不同类型的变速恒频风力发电系统。
The variable speed constant frequency double-fed wind power system is taken as the research object and the control problem of maximum wind energy tracing below the rated wind speed is studied.
以变速恒频双馈风力发电系统为研究对象，研究了额定风速以下风能的最大追踪控制问题。
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.
由沈阳工业大学研制的MW级变速恒频风电机组属于变桨距型机组，它在额定风速以上进行变桨距调功控制。
This article is about the research of space control in the variable speed constant frequency wind energy conversion system.
本文主要研究了变速恒频双馈风力发电系统中的矢量控制。
The simulation model for the grid connection of offshore wind farm via VSC-HVDC based on the fixed pitch constant speed wind power generation system is established.
建立了基于定桨距恒速风力发电机系统的海上风电场直流并网仿真模型，并对风电场几种典型运行情况的并网性能进行了仿真分析。
The simulation model for the grid connection of offshore wind farm via VSC-HVDC based on the fixed pitch constant speed wind power generation system is established.
建立了基于定桨距恒速风力发电机系统的海上风电场直流并网仿真模型，并对风电场几种典型运行情况的并网性能进行了仿真分析。
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