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光通维持率
释义
光通维持率
Encyclopedia
工学
【LED可靠性试验】
释
luminous maintenance rate
光通维持率
发光器件(灯)在规定条件下点亮,其光通量是随着工作时间的增加而逐渐衰减的,在寿命期间内特定时间的光通量与该灯的初始光通量之比。
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wooden hoe
Wooden Maps of Qin State from Fangmatan
Wooden Model of a Screen Carved with Designs from a Chu Tomb at Jiangling
wooden opera carvings of the residences in Ding Village
wooden opera new year pictures of Taiwan
wooden opera new year pictures of Tantou Town
wooden ox
Wooden Panel of Hesy-re
wooden plough
wooden pole house
wooden revetment
wooden screen paintings and wooden slips paintings of Han Dynasty
wooden screen with opera engravings at the theatre of the Hall of Numinous Response of Xianyou County
wooden ship
Wooden Slip of Wangzhangzhaoshuling from Wuwei
Wooden Slips from Dongshan Han Tomb in Taiyuan
Wooden Slips from Gaotai Han Dynasty Tombs at Jiangling
Wooden Slips from Han Dynasty Tomb at Jizhuang,Tianchang
Wooden Slips from the Nanyue Kingdom palace-site in Guangzhou
Wooden Slips from Weiyang Palace of Western Han Dynasty
Wooden Slips from Western Han Dynasty Tomb in Haizhou
Wooden Slips from Yuyang Tomb of the Western Han Dynasty
Wooden Slips of Eastern Han Dynasty from East pailou,Changsha
Wooden Slips of Eastern Han Dynasty from Shangde Street in Changsha
Wooden Slips of Han Dynasty from Luobowan,Guixian
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