tiáo​fú

adjustment scale

调幅 (調幅) tiáo​fú
adjustment scale verb
the magnitude or range of a change or adjustment, such as in prices or wages
amplitude modulation verb
the encoding of information in a carrier wave by varying its amplitude (AM)

Frequency

Movie subtitles
0.060 per million appears in 0% of films
Written text
0.438 per million

Sources

Definitions
CC-CEDICT