dumb hole

短语

发音

US

词形变化

dumb holes 复数 dumb holes

释义与例句

n.
  1. 1.

    A phenomenon in which phonons (sound perturbations) are unable to escape from a fluid that is flowing more quickly than the local speed of sound.

词源

Similar to black hole, formed with dumb (“mute, silent”). Used at least since 1994.

来源：wiktionary