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mach number

/mɑːk ˈnʌmbər/

翻译: 在空气动力学中用来表示物体速度与周围环境中声速之比的无量纲量,以物理学家恩斯特·马赫命名。

1 个条目

phrase

/mɑːk ˈnʌmbər/C1formalscientific
  • zh在空气动力学中用来表示物体速度与周围环境中声速之比的无量纲量,以物理学家恩斯特·马赫命名。

A dimensionless unit used in aerodynamics to represent the ratio of an object's speed to the speed of sound in the surrounding medium. Named after physicist Ernst Mach.

  1. Speed ratioC1formal

    A dimensionless quantity representing the ratio of the speed of an object to the speed of sound in the surrounding medium.

    zh马赫数

    • The aircraft reached a Mach number of 2.5 during the test flight.
    • Engineers calculate the Mach number to determine aerodynamic forces.
    • At Mach 1, an object is traveling at the speed of sound.