风洞

The semi-rigid wake model and the present calculation method were used to study two wind turbines in the wind tunnel, it was concluded that the results were closer to experiment data than that from the element/momentum theory, and aerodynamic performance of HAWT can be analyzed precisely, in particular, in the range of high tip speed ratio.

对两个风洞中实验的风力机模型进行了计算，结果表明，利用所给出的模型和计算方法比叶素/动量理论更加接近实验数据，并且在较大尖速比范围内可精确地分析水平轴风力机的空气动力特性。

One, wind tunnel -- develop aero commander of an advance unit or vanguard to decide a plane or function of other aero flight, wait like speed, height, outside waiting for element except thrust of plane weight, engine, the air motive force that the mainest factor is machine of action Yu Fei.

一、风洞——研制飞行器的先行官决定一架飞机或其他飞行器的飞行性能，如速度、高度等，除飞机重量、发动机推力等要素外，最重要的因素是功能于飞机的空气动力。

Good agreement was obtained between the computed results and wind-tunnel test results of the single house, and the variation trend of wind pressures on the surface of low-rise building under interference of the other house is discussed.

在单体计算结果和风洞试验结果有较好吻合的前提下，获得了有相邻建筑干扰的情况下，低层四坡屋面房屋的表面风压的变化规律，结论可直接供工程设计参考。

During 1982 to 1984, the LEST Foundation finished the possibility research, made a conceptional telescope design, carried out the experiments of helium filling and wind tunnel testing for the telescope tube and suggested a detailed financial budget with a total amount of 25 million US dollars.

自1982年到1984年，LEST基金会完成了可行性研究、方案设计，做了镜筒充氦和风洞试验，并提出了一个总额为2，500万美元的财政预算。

Other notable campus facilities include a pressurized wind tunnel and a towing tank for testing ship and ocean structure designs.

麻省理工学院其他引人注目的建筑还有一个增压风洞和一个用于测试船舶与海洋结构设计的拖拽水池。

The measurements in the ship tank and the wind tunnel show that there are no obvious differences between the mean profiles of turbulent boundary layers at the rigid wall and the compliant wall, but the turbulence intensity of the turbulent boundary layer near the compliant wall is higher than that near the rigid wall.

中文摘要：船池和风洞的热线热膜测量表明，刚性表面和柔性表面湍流边界层的平均速度型无明显差异，但柔性壁面的湍流边界层的壁面附近有较高的湍流强度；两者的相干结构有明显的不同特征。

The said tunnel will mainly be used to evaluate aircraft stalling/tail shaft performance, and to do complicated aerodynamic stability research in the recovery process of recoverable satellite and manned spacecraft as well as aerodynamic research in other related fields.

这座立式风洞投入使用后，主要用于飞机失速／尾旋性能评估、返回式卫星和载人飞船回收过程中复杂的空气动力稳定性研究，以及其它相关领域的空气动力研究。

To discuss the mechanism of controlling soil erosion by wind with standing crop stubble, combined the wind tunnel experiment with field experiment, the influence of soil erosion by wind on standing crop stubble under no-tillage practices was analyzed.

为了探讨直立作物残茬防治农田土壤风蚀发生的机理，该文利用风洞试验和野外观测相结合的方法，分析土壤免耕条件下直立作物残茬对农田土壤风蚀的影响。

The wind tunnel test results show that surface soil velocity and wind erosion modulus in the farmland under plow tillage are larger than that under no-tillage with standing crop stubble, while surface roughness under plow tillage is smaller than that under no-tillage with standing crop stubble.

风洞试验研究表明：翻耕土壤地表风速、土壤风蚀侵蚀率均比免耕土壤高，而地表粗糙度免耕明显高于翻耕。

In this paper, the wind tunnel test of large span roof structures' dynamic wind loads have been discussed systematically, the modal decomposition method and time domain method, which was combined with the result to calculate the wind-induced vibration responses and equivalent static wind loads of (non-large-deformation) large span roof structures are also studied at the same time, and some engineering-valuable conclusions are summarized.

本文正是在这种背景下，依托武汉体育中心游泳馆屋盖的风洞试验研究，对现有的大跨屋盖结构的风荷载及风致响应计算方法做了一定的改进，在风致响应理论在实际工程中的应用上得到了一些有工程价值的结论。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。