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- fluctuation wind speed spectrum 脉动风速谱
- wind speed spectrum 风速功率谱
- Three stages wind speed control. 三段风速控制。
- The wind speed had to be just right. 风速必须得恰倒好处才行。
- In an average wind speed 2.0 m / sec. 年平均风速为2.;0米/秒。
- The time history of pulse wind velocity and wind pressure on the structure has been simulation based on Davenport wind speed power spectrum and Shinozuka theory. 方法采用Daven port风速谱并根据Shinozuka理论;应用简谐波叠加法分别模拟了脉动风速、脉动风压和脉动风荷载时程曲线.
- No leakage in the windows under wind speed of 60m/s or 216 km/hr. 风速每秒60米(时速216公里)之风力下，玻璃窗没有漏水。
- Incline the wind meter to find the maximum wind speed direction. 运用风速计去发现最大风速及风向。
- Close to the ground, wind speed increases quickly with height. 靠近地面,风速随高度迅速增大。
- The spring wind speeds the greening of the plants. 春风催绿。
- From the composite mission spectrum and the related rotating speed spectrum, the accelerated mission test spectrum can be derived. 综合任务谱和相应的转速谱的获得为推导加速任务试车谱奠定了基础。
- DPi, DTi and WIi were dew period, dew temperature and wind speed. DPi，DTi，WIi分别代表露时、露温和风速。
- Surface roughness has a profound effect on wind speed. 地表粗糙度对风速有相当深刻的影响。
- They can generate wind speeds faster than 250 mph. 龙卷风的风速可以超过时速二百五十英里。
- The exponent P is a function of wind speed, ground roughness, stability, etc. 指数P是风速、地面不平度、稳定度等的函数。
- Then,the classical spectral representation method based on power spectrum density functions is applied,and Davenport spectrum is used to generate wind speed histories of a given field. 然后,应用经典的基于功率谱密度函数的谱表现方法,结合D avenport谱生成了目标场地的风场;
- To define wind speed and direction look at the shadow of a cloud on the ground. 空中风速及风向可由云在地面影子判断。
- Lying between these high-speed air streams are air streams of lower wind speed. 在这些高速气流之间,会出现较低速的气流。
- Wind speed measurements shall be made with a cup classified anemometer. 用已分好类别的杯状风速计进行风速测量。
- They were subject to violent yawing at low wind speeds. 它们在低风速下会发生强烈的偏离。
