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 416 48%
2 United States 172 19.9%
3 Netherlands 153 17.7%
4 Germany 54 6.2%
5 France 30 3.5%
6 Canada 23 2.7%
7 Russia 5 0.6%
8 Czech Republic 3 0.3%
9 Hong Kong 3 0.3%
10 United Kingdom 2 0.2%
11 Spain 1 0.1%
12 Romania 1 0.1%
13 Ireland 1 0.1%
14 Malaysia 1 0.1%
15 1 0.1%