a unit for measuring the apparent loudness of a sound, equal in number for a given sound to the intensity in decibels of a sound having a frequency of 1000 cycles per second when, in the judgment of a group of listeners, the two sounds are of equal loudness.
更多phon例句
The Gry-phon sat up and rubbed its eyes; then watched the Queen till she was out of sight; then it laughed.
"Same as if he had a bone in his throat," said the Gry-phon, and set to work to shake him and punch him in the back.
Steve might threaten what he liked, but jump Phon would not.
They say you go gamble, Chance he go gamble, Phon he go gamble too.
After the burial of Phon there was no more rest for the men in the "dug-out."