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 225 60%
2 United States 63 16.8%
3 Germany 55 14.7%
4 United Kingdom 6 1.6%
5 Taiwan 6 1.6%
6 Hong Kong 4 1.1%
7 Australia 4 1.1%
8 Netherlands 3 0.8%
9 Korea, Republic of 2 0.5%
10 Canada 2 0.5%
11 France 2 0.5%
12 Turkey 2 0.5%
13 Russia 1 0.3%