求翻译：工作电压范围宽。传统光源如高压钠灯工作电压波动超过±7%,寿命及亮度急剧下降,而BBE大功率LED路灯工作电压即使波动±20%,寿命及亮度依然不变。是什么意思？

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The wide range of voltages. Traditional light sources such as high-pressure sodium lights are working voltage fluctuates more than ± 7% and life expectancy declined sharply, and brightness and light LED BBE power even if the voltage fluctuations within ± 20% and life expectancy and brightness remain

The working voltage scope is wide.The traditional photosource like high pressure sodium lamp working voltage undulation surpasses ±7%, the life and brightness drops suddenly, but BBE high efficiency LED street light working voltage even if undulates ±20%, the life and brightness are still invariable

Wide operating voltage range. Traditional light sources such as high pressure sodium lamp voltage fluctuations exceed ± 7%, life expectancy and sharp drop in brightness, and BBE High power LED street lights working voltage fluctuation ± 20%, longevity and brightness remains unchanged.

正在翻译，请等待...