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 140 51.7%
2 United States 71 26.2%
3 Germany 39 14.4%
4 Netherlands 3 1.1%
5 Russia 3 1.1%
6 Singapore 3 1.1%
7 Estonia 2 0.7%
8 Brazil 2 0.7%
9 Canada 2 0.7%
10 Macao 2 0.7%
11 United Kingdom 2 0.7%
12 Korea, Republic of 1 0.4%
13 Slovakia 1 0.4%