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 United States 44 41.9%
2 China 34 32.4%
3 Netherlands 7 6.7%
4 Russia 4 3.8%
5 Germany 3 2.9%
6 Canada 3 2.9%
7 Mauritius 2 1.9%
8 Japan 2 1.9%
9 Turkey 2 1.9%
10 Korea, Republic of 1 1%
11 Hong Kong 1 1%
12 Finland 1 1%
13 France 1 1%