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 205 69.7%
2 United States 48 16.3%
3 Germany 19 6.5%
4 Taiwan 6 2%
5 Hong Kong 4 1.4%
6 Belarus 2 0.7%
7 Canada 2 0.7%
8 Singapore 2 0.7%
9 Sweden 2 0.7%
10 United Kingdom 2 0.7%
11 Korea, Republic of 1 0.3%
12 Netherlands 1 0.3%