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 432 80.1%
2 United States 43 8%
3 Germany 32 5.9%
4 Taiwan 8 1.5%
5 Hong Kong 6 1.1%
6 Japan 3 0.6%
7 Russia 3 0.6%
8 Singapore 2 0.4%
9 Azerbaijan 2 0.4%
10 Brazil 2 0.4%
11 Canada 2 0.4%
12 Israel 2 0.4%
13 United Kingdom 2 0.4%