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 149 50.2%
2 United States 57 19.2%
3 Germany 31 10.4%
4 Canada 25 8.4%
5 Netherlands 20 6.7%
6 Ukraine 4 1.3%
7 Hong Kong 3 1%
8 Albania 2 0.7%
9 Singapore 2 0.7%
10 Sweden 2 0.7%
11 Romania 1 0.3%
12 Moldova, Republic of 1 0.3%