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 209 58.7%
2 Germany 51 14.3%
3 Netherlands 40 11.2%
4 United States 36 10.1%
5 Hong Kong 4 1.1%
6 India 3 0.8%
7 Italy 3 0.8%
8 Russia 3 0.8%
9 South Africa 2 0.6%
10 Canada 2 0.6%
11 Poland 2 0.6%
12 Finland 1 0.3%