如何使用TM-21计算器推算LED的流明衰减值– 灯世界
2013 The Karen Martin Group, Inc. 21 You have to want it.
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Wat is de TM 21? - Armaturenregister
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DLC Solid State Lighting QPL
LM-80, LM-79, L70 and TM-21, What are the differences for lighting? - Penglight
有没有哪位有能源之星TM21报告任何芯片能不能发一份- LED有问必答(提问) - LED盘-LED论坛|中国LED照明外贸论坛-
DLC Solid-State Lighting Technical Requirements Tables Version 5.1
Meeting and Measuring ENERGY STAR® Requirements
Understanding LM-80: Measuring Lumen Maintenance of LED Light Sources | EYE Lighting
The ENERGY STAR TM-21 Calculator - DLC Stakeholder Meeting
TM21 Calculator
LED lifetime claims need a reality check (MAGAZINE) | LEDs Magazine
Amazon.com: Texas Instruments TI-34 MultiView Scientific Calculator : Texas Instruments: Everything Else
Efficient energy use - Wikipedia
