Longer life, higher brightness efficiency, and lower cost all contribute to this trend.
基于1个网页-相关网页
higher brightness efficiency
更高的亮度效率
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The reason for higher internal efficiency but lower brightness is its poor external efficiency.
发光二极管内量子效率高而亮度不高的原因是外量子效率低。
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