好词典

mach

UK /mæk/US /mɑːk/

词源

Named after Austrian physicist Ernst Mach (1838–1916), who studied supersonic motion.

noun

❶ 马赫数,表示物体速度与音速的比值,常用于航空和航天领域描述超音速飞行器的速度。

“The jet flew at Mach 2, twice the speed of sound.”

(这架喷气式飞机以2马赫的速度飞行,是音速的两倍。)

“Breaking the sound barrier means reaching Mach 1.”

(突破音障意味着达到1马赫。)

同义词:Mach number, speed of sound ratio

常见短语

Mach speed — 指以马赫数为单位的速度,常用于描述高速飞行器的速度。

“The missile travels at Mach speed to intercept its target.”

(导弹以马赫速度飞行以拦截目标。)