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 269 43.4%
2 United States 170 27.4%
3 Netherlands 99 16%
4 Germany 39 6.3%
5 Canada 17 2.7%
6 Ukraine 6 1%
7 France 5 0.8%
8 Norway 3 0.5%
9 Russia 2 0.3%
10 United Kingdom 2 0.3%
11 Taiwan 2 0.3%
12 Hong Kong 2 0.3%
13 India 1 0.2%
14 Korea, Republic of 1 0.2%
15 1 0.2%
16 Singapore 1 0.2%