风洞

A flow passage in a wind tunnel that decelerates a stream of gas or liquid from a high to a low velocity .

扩散道风洞中的气流变迁，将会调整度的气体或液体流降到低速

The French, fired on from every point,--from behind the walls, from the summits of the garrets, from the depths of the cellars, through all the casements, through all the air-holes, through every crack in the stones,-- fetched fagots and set fire to walls and men; the reply to the grape-shot was a conflagration.

法军四处受到火枪的射击，从墙后面、顶阁上、地窖底里，从每个窗口、每个通风洞、每个石头缝里都受到射击，他们便搬一捆捆树枝去烧那一带的墙和人，射击得到了火攻的回答。

Studied the use of these gaits over a wide range of speeds in Cockatiels and Ringed Turtle-doves trained to fly in a wind tunnel.

研究利用这些步态较广泛的速度在cockatiels和环龟-鸽派的训练飞行，在一个风洞。

This wind tunnel redirects dangerous gusts through the city, and also serves as a garbage dumping system.

这个风洞让危险的狂风穿过城市，也成为了垃圾倾倒系统。

Furthermore, the parametric vibration of guyed mast analyses and its control method is proposed. Finally, the wind tunnel experiment of guyed mast was carried out, and the test results were examined. Through the experiment, the dynamic characteristics of guyed mast are well understood, and the proposed method is this paper is verified.

并进一步分析了桅杆结构参数振动的特性及其控制方法，通过对桅杆结构风洞试验的分析，了解了桅杆结构在实际工作状态下的动力特性，并证明目前理论的正确性。

We have developed many kinds of optical methods to measure the insect flight. For example, a beating force measurement method reduces the uncertainty caused by air turbulence; a flow measurement using a frame straddling technique decreases the interval between exposures of the flow;extracting the weak distorted fringes on the dragonfly wing by a correlation algorithm; measuring the camber deformation of a dragonfly wing using projected comb fringe without hypothesizing that the wing is a rigid plate. By measuring the beating force, wing kinematics and flow, simutantously, we can analyze the relationship among many flight parameters.

本研究针对昆虫运动的特点，研究开发了测量昆虫运动，特别是自由飞行昆虫运动的光学方法，包括：风洞中扇翅力的测量，解决高灵敏度光学测量的抗干扰问题；帧头帧尾流场测量方法，解决由CCD拍摄帧频导致的测量速度低的问题；调制相关算法，解决透明翅膀上散射光较弱问题；梳状条纹投影法，解决翅膀弓形变形测量问题，不需要以往的翅膀刚性平板或刚性条杆假设；多参数的综合测量，解决各参数间的相位匹配问题。

It is found that the side-wall where the wing is set on is of great influence on the flow of wing/side-wall juncture and calculation results around wing mounded in the wind tunnel are in good agreement with experimental data.

计算表明，机翼安装侧壁对实验结果影响很大，模拟风洞边界的计算结果与实验结果吻合很好。

Based on the characteristics of faulty coal,the process and operation are adjusted and drawn up to suit its properties,viz.,to decrease appropriately the intensity of blowing,readjust the quantity of steam used,prevent the coal bed from blown upside down,dented,tunnelled or lumped,and readjust the upward and downward blowing of nitrogen and air in quantity,with the result that experiences ar...

根据劣质煤的特性调整和制定了适合其性质的工艺和操作，即适当减小吹风强度，调整蒸汽用量，防止出现炭层被吹翻、吹凹、吹出风洞及结块，调节上、下吹加氮空气量等。劣质煤的应用，降低了成本，提高了企业的竞争力。

Actually, anti-pressure structure is similar to the wing structure of an airplane. From wind tunnel experiments, we have learned that energy interference will form a series of vortexes.

实际上，反压力结构和飞机的机翼结构相似，从风洞实验可知，能量干扰会形成连续的涡漩现象。

In order to study the influences of different wind speeds and wind yawed angles on the buffeting performance of bridge tower during construction,a wind tunnel test of bridge tower aeroelastic model was made based on considering the action of tower crane.

为了研究不同风速、风偏角在施工阶段对桥塔抖振性能的影响，进行了考虑塔吊共同作用的桥塔联合气弹模型风洞试验。

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％。