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 47 33.8%
2 United States 44 31.7%
3 Sweden 15 10.8%
4 Germany 8 5.8%
5 Ireland 5 3.6%
6 Korea, Republic of 5 3.6%
7 Hong Kong 4 2.9%
8 Singapore 3 2.2%
9 France 2 1.4%
10 Netherlands 2 1.4%
11 Russia 2 1.4%
12 Japan 1 0.7%
13 India 1 0.7%