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 492 48.8%
2 United States 232 23%
3 Netherlands 113 11.2%
4 Germany 67 6.6%
5 Canada 28 2.8%
6 Russia 13 1.3%
7 Australia 9 0.9%
8 France 9 0.9%
9 Ireland 9 0.9%
10 Korea, Republic of 8 0.8%
11 Taiwan 8 0.8%
12 Hong Kong 6 0.6%
13 Singapore 4 0.4%
14 Moldova, Republic of 3 0.3%
15 Sweden 2 0.2%
16 India 2 0.2%
17 Japan 1 0.1%
18 Serbia 1 0.1%
19 Norway 1 0.1%
20 United Arab Emirates 1 0.1%