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 540 38.8%
2 United States 282 20.2%
3 Netherlands 229 16.4%
4 Germany 110 7.9%
5 France 68 4.9%
6 Russia 50 3.6%
7 Canada 25 1.8%
8 Sweden 20 1.4%
9 Czech Republic 14 1%
10 Singapore 9 0.6%
11 Hong Kong 8 0.6%
12 Korea, Republic of 7 0.5%
13 Ukraine 4 0.3%
14 India 4 0.3%
15 4 0.3%
16 Norway 3 0.2%
17 Poland 2 0.1%
18 South Africa 2 0.1%
19 Ireland 2 0.1%
20 Australia 2 0.1%
21 United Arab Emirates 2 0.1%
22 Taiwan 2 0.1%
23 Thailand 1 0.1%
24 Brazil 1 0.1%
25 Ghana 1 0.1%
26 Nigeria 1 0.1%