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 480 55.7%
2 United States 152 17.7%
3 Netherlands 140 16.3%
4 Germany 45 5.2%
5 Canada 10 1.2%
6 France 7 0.8%
7 Russia 5 0.6%
8 Ukraine 4 0.5%
9 United Kingdom 4 0.5%
10 India 4 0.5%
11 Jamaica 2 0.2%
12 Austria 2 0.2%
13 Singapore 2 0.2%
14 South Africa 2 0.2%
15 Estonia 1 0.1%
16 Korea, Republic of 1 0.1%