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 67 55.4%
2 United States 26 21.5%
3 Netherlands 11 9.1%
4 Germany 8 6.6%
5 United Kingdom 2 1.7%
6 Greece 1 0.8%
7 Singapore 1 0.8%
8 Spain 1 0.8%
9 Switzerland 1 0.8%
10 France 1 0.8%
11 Argentina 1 0.8%
12 Canada 1 0.8%