light depreciation造句

For HID lamps, there is no improvement of the lamp efficacy in using higher frequency, but for these lamps the ballast losses are lower at higher frequencies and also the light depreciation is lower, meaning the lamp produces more light over its entire lifespan.
Some HID lamp types like the ceramic discharge metal halide lamp have reduced reliability when operated at high frequencies in the range of; for these lamps a square wave low frequency current drive is mostly used with frequency in the range of, with the same advantage of lower light depreciation.
It's difficult to find light depreciation in a sentence. 用light depreciation造句挺难的