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 173 65.5%
2 United States 39 14.8%
3 Germany 32 12.1%
4 Russia 7 2.7%
5 Hong Kong 2 0.8%
6 India 2 0.8%
7 Japan 2 0.8%
8 Korea, Republic of 2 0.8%
9 Taiwan 2 0.8%
10 Switzerland 1 0.4%
11 Australia 1 0.4%
12 Brazil 1 0.4%