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 172 55.5%
2 United States 56 18.1%
3 Germany 30 9.7%
4 Canada 11 3.5%
5 Netherlands 8 2.6%
6 Japan 4 1.3%
7 Hong Kong 4 1.3%
8 India 3 1%
9 France 3 1%
10 Czech Republic 3 1%
11 Albania 3 1%
12 Brazil 3 1%
13 Russia 3 1%
14 Portugal 2 0.6%
15 Romania 2 0.6%
16 Slovakia 1 0.3%
17 Ukraine 1 0.3%
18 Denmark 1 0.3%