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 619 53.2%
2 United States 194 16.7%
3 Netherlands 137 11.8%
4 France 92 7.9%
5 Germany 60 5.2%
6 Canada 18 1.5%
7 Hong Kong 11 0.9%
8 Korea, Republic of 8 0.7%
9 India 5 0.4%
10 United Kingdom 3 0.3%
11 Norway 3 0.3%
12 Ukraine 2 0.2%
13 Italy 2 0.2%
14 Japan 2 0.2%
15 Austria 2 0.2%
16 Bahrain 2 0.2%
17 Brazil 1 0.1%
18 Mauritius 1 0.1%
19 Russia 1 0.1%
20 Slovakia 1 0.1%