BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 China 26 36.6%
2 United States 23 32.4%
3 Germany 13 18.3%
4 India 3 4.2%
5 Ukraine 2 2.8%
6 Hong Kong 1 1.4%
7 Republic of Korea 1 1.4%
8 Spain 1 1.4%
9 Sri Lanka 1 1.4%