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 249 58.2%
2 United States 112 26.2%
3 Germany 44 10.3%
4 Netherlands 7 1.6%
5 India 3 0.7%
6 Trinidad and Tobago 3 0.7%
7 Singapore 2 0.5%
8 Korea, Republic of 2 0.5%
9 Brazil 1 0.2%
10 Saudi Arabia 1 0.2%
11 Ireland 1 0.2%
12 Spain 1 0.2%
13 Ukraine 1 0.2%
14 United Kingdom 1 0.2%