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 250 69.3%
2 United States 43 11.9%
3 Germany 42 11.6%
4 Japan 5 1.4%
5 United Kingdom 4 1.1%
6 Hong Kong 3 0.8%
7 India 2 0.6%
8 France 2 0.6%
9 Brazil 2 0.6%
10 Canada 2 0.6%
11 Romania 2 0.6%
12 Russia 2 0.6%
13 Singapore 1 0.3%
14 Korea, Republic of 1 0.3%