wēi​bō

microwave

微波 wēi​bō
microwave noun
electromagnetic radiation with a frequency between 300 MHz and 300 GHz, or an appliance that uses it

Microwave communication has wide applications in modern technology.

ripple noun
small waves on the surface of water

A light breeze blew across the lake, creating ripples on the surface.

Frequency

Movie subtitles
2.00 per million appears in 1% of films
Written text
5.03 per million

Sources

Definitions
CC-CEDICT