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 394 51.7%
2 Netherlands 146 19.2%
3 United States 134 17.6%
4 Germany 46 6%
5 Canada 13 1.7%
6 Hong Kong 7 0.9%
7 Korea, Republic of 5 0.7%
8 France 4 0.5%
9 India 3 0.4%
10 Ukraine 3 0.4%
11 Poland 2 0.3%
12 Russia 2 0.3%
13 Singapore 1 0.1%
14 United Kingdom 1 0.1%
15 Kazakhstan 1 0.1%