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 150 42%
2 United States 124 34.7%
3 Germany 39 10.9%
4 Taiwan 11 3.1%
5 Hong Kong 7 2%
6 Russia 7 2%
7 Korea, Republic of 6 1.7%
8 Sweden 3 0.8%
9 Ukraine 2 0.6%
10 United Kingdom 2 0.6%
11 France 2 0.6%
12 India 1 0.3%
13 Netherlands 1 0.3%
14 South Africa 1 0.3%
15 Canada 1 0.3%