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 735 42.5%
2 United States 424 24.5%
3 Netherlands 220 12.7%
4 France 118 6.8%
5 Germany 105 6.1%
6 Canada 37 2.1%
7 Czech Republic 32 1.9%
8 Korea, Republic of 9 0.5%
9 Ireland 8 0.5%
10 Hong Kong 6 0.3%
11 India 6 0.3%
12 United Kingdom 6 0.3%
13 Brazil 5 0.3%
14 Singapore 4 0.2%
15 Taiwan 2 0.1%
16 Russia 2 0.1%
17 Belgium 2 0.1%
18 Kazakhstan 2 0.1%
19 Finland 1 0.1%
20 Norway 1 0.1%
21 Croatia 1 0.1%
22 Ukraine 1 0.1%
23 South Africa 1 0.1%