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 188 58.8%
2 United States 55 17.2%
3 Germany 37 11.6%
4 Canada 20 6.2%
5 Taiwan 6 1.9%
6 Netherlands 3 0.9%
7 Russia 2 0.6%
8 Australia 2 0.6%
9 Ukraine 2 0.6%
10 United Kingdom 2 0.6%
11 Hong Kong 1 0.3%
12 Singapore 1 0.3%
13 Romania 1 0.3%