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不同光源照明的比较 Comparision among lightings with different Light Sources：
| Lighting Source | Light efficiency (LM/W) | Color Temperature(K) | Life Span（Hours） |
| LED | 120 | 2,700-20,000K | 20000-100000 |
| Incandescent | 15 | 2800 | 1000 |
| Halogen light | 25 | 3000 | 2000-2500 |
| Fluorescent light | 60-70 | - | 10000-12000 |
| Hi-pressure mercury light | 50 | 3300-4400 | 6000 |
| Metal halide lamp | 85 | 3000-5600 | 6000-20000 |
| Hi-Pressure Sodium Lamp | 120 | 2000-2500 | 24000 |
| High frequency discharge lamp | 70 | 3000-8000 | 40000-80000 |
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