“降低光频”英文怎么说？

low down the frequency of light?

降低光频:to reduce/lower/bring down light/optical frequency

光频:
1. light frequency
2. optical frequency

降低:
1. to reduce
2. to lower
3. to bring down

Relative explainations:
<lowers> <tone down> <play down> <lower> <scale-down> <recede> <abasement> <abase> <take from> <debasement> <let...down> <fell> <depression> <decline> <lowered> <degradation>