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 414 54.2%
2 United States 171 22.4%
3 Netherlands 63 8.2%
4 Germany 54 7.1%
5 Russia 17 2.2%
6 Canada 10 1.3%
7 Hong Kong 9 1.2%
8 France 7 0.9%
9 Korea, Republic of 5 0.7%
10 Taiwan 4 0.5%
11 United Kingdom 3 0.4%
12 Singapore 2 0.3%
13 South Africa 2 0.3%
14 India 2 0.3%
15 Portugal 1 0.1%