难检字字典在线查询

汉语拼音：fēng dòng

产生人工气流的管道装置。用以研究空气或其他气体绕物体的流动和物体的空气动力特性。广泛用于对一些飞行器模型进行吹风试验，还可用以改进流线型汽车、机车、船舶的设计，以减少阻力，或测定高层建筑物所受的风力等。

• Compressibility effects are investigated with highspeed models in high - speed tunnels.

  压缩性影响需用高速模型在 高速 风洞中试验.

• Hypersonic wind tunnels operating at very low densities were developed starting in about 1960.

  低密度超音速风洞大约开始发展于1960年.

• If the tunnel draws its air directly from the atmosphere, entirely fresh air is used.

  如果风洞直接从大气中吸进空气, 那么使用的是完全新鲜的空气.

• After a tunnel is constructed, the next step is to determine its flow characteristics.

  风洞建成以后, 下一步就是要确定它的流场品质.

• It is not correct to think of the wind tunnel having uniform flow.

  设想风洞具有均匀的气流是不正确的.

• The damping derivatives can only be determined experimentally in the wind tunnel or ballistic range.

  阻尼导数只能用风洞或弹道试验来确定.

• It'should be noted that a balance is not always required in a wind tunnel.

  应该指出,天平对风洞来说并非是绝对必须的.

• Designs and manufactures turbine engine test cells and wind tunnels.

  设计生产涡轮发动机测试单元和风洞.

• The scale effects in wind tunnel modelling tests are studied.

  本文通过比较大气边界层与不同比尺的模型实验,研究了风洞模型实验中的比尺效应.

• The possibility of application of by pass to prevent surging is studied.

  作者讨论了旁路调节作为风洞中防喘振措施的可行性.

• Advanced composite engineered shell: Quiet, aero - tuned design for wind - tunnel - tested comfort.

  先进复合材料工程壳: 安静, 空气调节 设计,风洞测试的舒适性.

• This testing approach avoided the complications of severe wind - tunnel wall interference.

  这种测试方法避免严重并发症的风洞洞壁干扰.

• Wind tunnel tests of bound sub missiles ejected rearward into the base flow field are introduced.

  介绍了子弹束后向抛入底部流场的风洞试验:后抛观察试验、测力试验和测压试验.

• The tunnel's propellers and fan motors were situated in the exit cone, seen here during construction.

  风洞的螺旋桨和风扇马达坐落在出口锥, 在施工期间出现在这里.

• The unsteady aerodynamic and moment characteristics of the models and the unsteady wall pressure are measured.

  研究中测量了模型的气动力及力矩特性,同时测量了风洞的非定常壁压.