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 211 39.6%
2 Netherlands 121 22.7%
3 United States 104 19.5%
4 Germany 42 7.9%
5 Canada 21 3.9%
6 Russia 10 1.9%
7 France 5 0.9%
8 India 5 0.9%
9 Korea, Republic of 2 0.4%
10 Hong Kong 2 0.4%
11 Brazil 2 0.4%
12 Viet Nam 2 0.4%
13 Switzerland 2 0.4%
14 Norway 2 0.4%
15 Ukraine 1 0.2%
16 Estonia 1 0.2%