Journal of Chongqing Jiaotong University(Natural Science) ›› 2009, Vol. 28 ›› Issue (6): 1055-1059.DOI: 10.3969/j.issn.1674-0696.2009.06.21
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PANG Qing-ge1, HU Yu-cong1, WANG Zi-ming2, YOU Jin-long2
庞清阁1,胡郁葱1,王子明2,游锦龙2