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 433 53%
2 United States 139 17%
3 Netherlands 135 16.5%
4 Germany 45 5.5%
5 Korea, Republic of 15 1.8%
6 Canada 14 1.7%
7 Russia 12 1.5%
8 France 7 0.9%
9 Japan 5 0.6%
10 India 3 0.4%
11 Hong Kong 2 0.2%
12 Saudi Arabia 2 0.2%
13 South Africa 2 0.2%
14 Switzerland 1 0.1%
15 United Kingdom 1 0.1%
16 Australia 1 0.1%