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 690 47.3%
2 United States 274 18.8%
3 Netherlands 184 12.6%
4 France 98 6.7%
5 Germany 92 6.3%
6 Russia 58 4%
7 Canada 17 1.2%
8 Czech Republic 14 1%
9 Ukraine 7 0.5%
10 Australia 6 0.4%
11 India 3 0.2%
12 Taiwan 3 0.2%
13 Sweden 2 0.1%
14 Malaysia 2 0.1%
15 Portugal 2 0.1%
16 Lao People's Democratic Republic 2 0.1%
17 Hong Kong 2 0.1%
18 Luxembourg 1 0.1%
19 Norway 1 0.1%
20 Poland 1 0.1%
21 Singapore 1 0.1%