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ArchiveVolume 8, Issue 6, December 2020
Lele Liu, Jianwen Wei
Pages: 122-127     Published Online: Oct. 21, 2020
DOI: 10.11648/j.sd.20200806.11        Views 57      Downloads 12
Xiao Weiwei, Fan Meixia
Pages: 128-133     Published Online: Nov. 4, 2020
DOI: 10.11648/j.sd.20200806.12        Views 31      Downloads 7
Weiwei Xiao, Yixuan Wang
Pages: 134-138     Published Online: Nov. 4, 2020
DOI: 10.11648/j.sd.20200806.13        Views 31      Downloads 5
Chen Jiahao, Xu Zhihong, Zhang Yong, Zhu Kangwei
Pages: 139-145     Published Online: Nov. 4, 2020
DOI: 10.11648/j.sd.20200806.14        Views 30      Downloads 3
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