BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 83 59.3%
2 United States 30 21.4%
3 Korea, Republic of 6 4.3%
4 Germany 5 3.6%
5 Senegal 4 2.9%
6 Netherlands 3 2.1%
7 Japan 3 2.1%
8 Russia 2 1.4%
9 France 2 1.4%
10 Hong Kong 1 0.7%
11 Armenia 1 0.7%