So that it can be sunny and cloudy days in accordance with the human body to regulate the optimal light intensityoutput power, thereby adjusting lamp brightness.
使其能在晴天和阴天根据人体的最适光照强度来调节输出功率，进而调节灯管亮度。
2
The LED intensity is modulated so rapidly that human eyes cannot notice, so the output appears constant.
LED强烈的调制速度是如此之快，人眼是察觉不到的，所以觉得输出(亮度)不变。
3
During the first quarter, energy intensity - measured as energy use per unit of output - actually increased, Mr. Zhang said.