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| 2014, Vol. 51(3): 35-42 DOI: | ||
| Application and Experimental Evaluation of Natural Light for Tunnel Illumination | ||
| (Hunan Communications Research Institute, Research and Promotion Center of Energy Saving and Emission Reduction Technology for Transportation of Hunan, Changsha 410015) | ||
| Received null Revised null | ||
| Supporting info | ||
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