英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
Spattle查看　Spattle　在百度字典中的解释百度英翻中〔查看〕
Spattle查看　Spattle　在Google字典中的解释Google英翻中〔查看〕
Spattle查看　Spattle　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Wind tunnel - Wikipedia
    In 1952 the University of California constructed the first two high-altitude wind tunnels: one for testing objects at 50 to 70 miles (80 to 113 km) above the earth and the second for tests at 80 to 200 miles (130 to 320 km) above the earth
  • Beginners Guide to Wind Tunnels - NASA
    What is a wind tunnel? How do aerospace engineers use wind tunnels? A wind tunnel is a machine which can simulate the movement of air around an aircraft in flight In the wind tunnel, the aeronautical engineer can control the conditions that effect the forces and motion of the aircraft
  • How Wind Tunnels Work - HowStuffWorks
    Wind tunnels are simply hollow tubes; at one end, they have powerful fans that create a flow of air inside the tunnel Some tunnels are desktop-sized and good for testing only very small objects Other tunnels are massive structures in which engineers test full-size aircraft and cars
  • Wind tunnel | Aeronautical Engineering Benefits | Britannica
    Wind tunnel, device for producing a controlled stream of air in order to study the effects of movement through air or resistance to moving air on models of aircraft and other machines and objects
  • How does a wind tunnel work? - Explain that Stuff
    A simple explanation of how a wind tunnel works, for younger readers, and why it's used to test planes before they fly in the sky for real
  • Wind Tunnels - an overview | ScienceDirect Topics
    A wind tunnel is defined as a controlled environment used to test the aerodynamic performance of vehicles, such as aircraft and cars, by simulating airflow conditions It can include features like a moving ground plane and is equipped for measuring flow velocity and localizing noise sources
  • The Science and Engineering of Wind Tunnels: A Comprehensive Guide
    A wind tunnel is an essential piece of engineering equipment used to simulate and analyze the effects of air movement on various models and structures From aircraft design to automotive testing, wind tunnels have proven to be invaluable in advancing technology across many industries
  • What Are Wind Tunnels? (Grades 5-8) - NASA
    Wind tunnels are tube-shaped facilities that allow engineers to move air over a vehicle as if it were flying They help researchers to learn more about how an aircraft will fly
  • Wind tunnel - New World Encyclopedia
    A wind tunnel is a research tool developed to assist with studying the effects of air moving over or around solid objects The speed and flow of air in a wind tunnel can be measured in any of several ways
  • NATIONAL FULL-SCALE AERODYNAMICS COMPLEX - Arnold Air Force Base
    The 40-by-80 foot wind tunnel was built in 1944 In 1987, it became NFAC after the 80-by-120 foot test section was added and the fan drive system was replaced The new fan drive system is composed of six variable-pitch fans, each 40 feet in diameter arranged in two rows of three





中文字典-英文字典  2005-2009