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单词 mach
释义

WordReference Random House Learner's Dictionary of American English © 2024
mach or Mach /mɑk/USA pronunciation  n. [uncountable]
  1. the speed of an aircraft in relation to the speed of sound:The plane flew at Mach 3, three times the speed of sound.

WordReference Random House Unabridged Dictionary of American English © 2024
mach  (mäk),USA pronunciation n. 
  1. Physicsa number indicating the ratio of the speed of an object to the speed of sound in the medium through which the object is moving. Abbr.: M Also, Mach. Also called mach number, Mach number. [after E. Mach]

Mach  (mäk; Ger. mäкн),USA pronunciation n. 
    Ernst  (ernst),USA pronunciation 1838–1916, Austrian physicist, psychologist, and philosopher.
mach., 
    1. Mechanical Engineeringmachine.
    2. Mechanical Engineeringmachinery.
    3. Mechanical Engineeringmachinist.

Collins Concise English Dictionary © HarperCollins Publishers::
Mach /mæk/ n
  1. short for Mach number
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更新时间：2025/8/1 6:07:37