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 256 69.9%
2 United States 54 14.8%
3 Germany 28 7.7%
4 Taiwan 6 1.6%
5 Hong Kong 5 1.4%
6 Japan 5 1.4%
7 Australia 3 0.8%
8 Korea, Republic of 2 0.5%
9 United Kingdom 2 0.5%
10 Singapore 2 0.5%
11 Russia 1 0.3%
12 Azerbaijan 1 0.3%
13 Croatia 1 0.3%