zero luminance造句

This line is the line of zero luminance, and is called the alychne.
For this reason, it is necessary to shut off the electron beam ( corresponding to a video signal of zero luminance ) during the time it takes to reorient the beam from the end of one line to the beginning of the next ( " horizontal retrace " ) and from the bottom of the screen to the top ( " vertical retrace " or " vertical blanking interval " ).
It's difficult to find zero luminance in a sentence. 用zero luminance造句挺难的