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luminous maintenance rate
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luminous maintenance rate
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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Rules on Safety and Protection of Radioisotopes and Radiation-emitting Device
Rules on School Hygiene Work
rules on stage
Rules on Theft
Rules on the Licenses for Safety of Radioisotopes and Radiation-emitting Devices
Rules on the transportation of radioactive materails
Rules on the Work of Museums of Provinces, Cities and Autonomous Regions
rule space model
rules-selecting approach
rule-utilitarianism
Rule ‘Chi’ of Fifteen Grades
rulin four masters
ruling
ruling by law on policing
ruling by power
ruling grating
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ruling the school by law
Ru Long
Rulong Bridge
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rumba
rumbatron
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Rumble in the Bronx
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