Hz, hz
Hz 缩略自： hertz
单语范例（未经PONS编辑处理）
One is modulated at 90 Hz, the other at 150 Hz.
en.wikipedia.org The top of the minute is marked by a 0.5 second 800 Hz tone.
en.wikipedia.org The maximum speed of the strobe shutter was also increased slightly, to 8 Hz.
en.wikipedia.org If played as a standard optical print, only the 25 Hz and 35 Hz control tones would be heard.
en.wikipedia.org These four frames are stretched into five by exploiting the interlaced nature of 60 Hz video.
en.wikipedia.org