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 556 46.7%
2 United States 246 20.7%
3 Netherlands 144 12.1%
4 France 90 7.6%
5 Germany 89 7.5%
6 Canada 16 1.3%
7 Sweden 11 0.9%
8 Taiwan 8 0.7%
9 Russia 8 0.7%
10 Malaysia 4 0.3%
11 Hong Kong 4 0.3%
12 Ukraine 3 0.3%
13 Spain 2 0.2%
14 India 2 0.2%
15 Korea, Republic of 2 0.2%
16 Denmark 2 0.2%
17 Finland 1 0.1%
18 Luxembourg 1 0.1%
19 United Kingdom 1 0.1%