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 460 59.1%
2 United States 161 20.7%
3 Netherlands 61 7.8%
4 Germany 60 7.7%
5 Canada 14 1.8%
6 France 4 0.5%
7 Russia 4 0.5%
8 Ukraine 3 0.4%
9 Macao 3 0.4%
10 Japan 3 0.4%
11 Hong Kong 2 0.3%
12 India 2 0.3%
13 Korea, Republic of 1 0.1%
14 United Kingdom 1 0.1%