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 172 59.9%
2 United States 64 22.3%
3 Germany 23 8%
4 Ireland 8 2.8%
5 Japan 3 1%
6 Korea, Republic of 2 0.7%
7 Lithuania 2 0.7%
8 Netherlands 2 0.7%
9 Russia 2 0.7%
10 Singapore 2 0.7%
11 France 2 0.7%
12 Australia 2 0.7%
13 Canada 2 0.7%
14 India 1 0.3%