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 139 57.2%
2 United States 65 26.7%
3 Germany 19 7.8%
4 Netherlands 4 1.6%
5 Russia 3 1.2%
6 Singapore 3 1.2%
7 Hong Kong 3 1.2%
8 Canada 3 1.2%
9 Jordan 2 0.8%
10 Taiwan 1 0.4%
11 United Kingdom 1 0.4%