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 United States 249 41.2%
2 China 183 30.2%
3 Netherlands 46 7.6%
4 Germany 45 7.4%
5 Korea, Republic of 16 2.6%
6 Lithuania 11 1.8%
7 France 9 1.5%
8 South Africa 8 1.3%
9 Sweden 8 1.3%
10 Taiwan 6 1%
11 Canada 5 0.8%
12 Togo 3 0.5%
13 Russia 3 0.5%
14 Norway 2 0.3%
15 Switzerland 2 0.3%
16 Brazil 2 0.3%
17 India 2 0.3%
18 Indonesia 2 0.3%
19 Finland 1 0.2%
20 United Kingdom 1 0.2%
21 Viet Nam 1 0.2%