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 681 47.2%
2 United States 275 19%
3 Netherlands 180 12.5%
4 Germany 100 6.9%
5 France 99 6.9%
6 Russia 49 3.4%
7 Canada 21 1.5%
8 Czech Republic 18 1.2%
9 Ukraine 5 0.3%
10 India 3 0.2%
11 Sweden 2 0.1%
12 Taiwan 2 0.1%
13 Australia 2 0.1%
14 Bulgaria 2 0.1%
15 Finland 1 0.1%
16 Hong Kong 1 0.1%
17 Norway 1 0.1%
18 Portugal 1 0.1%
19 United Kingdom 1 0.1%