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 566 39.9%
2 United States 317 22.4%
3 Netherlands 215 15.2%
4 France 105 7.4%
5 Germany 97 6.8%
6 Russia 59 4.2%
7 Canada 20 1.4%
8 Czech Republic 14 1%
9 Norway 4 0.3%
10 Taiwan 4 0.3%
11 Ukraine 3 0.2%
12 India 3 0.2%
13 Hong Kong 2 0.1%
14 Australia 2 0.1%
15 Brazil 2 0.1%
16 Denmark 1 0.1%
17 Ireland 1 0.1%
18 United Arab Emirates 1 0.1%
19 Portugal 1 0.1%