lumen maintenance projections
Operating Life常温寿命测 Lumen Maintenance Projections(光通量衰减) Based on internal long-term reliability testing and standardized forecasting methods,Topbright 1W LEDs to maintain an a...
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lumen maintenance projections
流明维护预测
以上为机器翻译结果，长、整句建议使用 人工翻译 。