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 643 78.7%
2 United States 102 12.5%
3 Germany 35 4.3%
4 Canada 16 2%
5 Singapore 8 1%
6 Netherlands 3 0.4%
7 Czech Republic 2 0.2%
8 Hong Kong 2 0.2%
9 Sweden 2 0.2%
10 United Kingdom 1 0.1%
11 Ireland 1 0.1%
12 Moldova, Republic of 1 0.1%
13 France 1 0.1%